High School Math : How to solve two-step equations with integers in pre-algebra

Study concepts, example questions & explanations for High School Math

varsity tutors app store varsity tutors android store

Example Questions

Example Question #21 : How To Solve Two Step Equations With Integers In Pre Algebra

Solve for  if

Possible Answers:

Correct answer:

Explanation:

To perform a two step algebra problem with addition and division we must remove the numbers from  so it is by itself on one side of the equation.

To do this we first look to see if a number is being added or subtracted from .

In this case a number is being subtracted so we must add the number,  , to each side of the equation 

Perform the math so our equation becomes

Then we multiply each side of the equation by the number that is under  to get  by itself 

Perform the math to find the answer 

Example Question #22 : How To Solve Two Step Equations With Integers In Pre Algebra

Solve for  if

Possible Answers:

Correct answer:

Explanation:

The problem above is a two-step algebra problem with distribution.

To solve you must first distribute the  outside of the parentheses into both of the numbers inside my multiplying 

Then we must get our variable, , by itself.

To do this we must add the number,  , to each side of the equation 

Perform the math so our equation becomes .

Then we divide each side of the equation by the number that is in front of  to get  by itself

 

Perform the math to find the answer 

Example Question #23 : How To Solve Two Step Equations With Integers In Pre Algebra

Solve for  if

Possible Answers:

Correct answer:

Explanation:

When there are variables and numbers on each side of the equation, to solve we must mathematically move the variables onto one side and the numbers onto the other.

To do this we put all of the variables on the right side of the equal sign by subtracting  from the right and left side of the equation to have 

When adding or subtracting variables you only add or subtract the numbers in front of the variables. If there is no number the number value is .

Perform the math:

Then to get all of the integers to the left side we will subtract  from the right and left side of the equation to have 

Perform the math:

At this point we must divide each side of the equation by the number that is in front of  to get  by itself 

Perform the math to find the answer 

The answer is .

Example Question #24 : How To Solve Two Step Equations With Integers In Pre Algebra

Solve for  if

 

Possible Answers:

Correct answer:

Explanation:

To perform a two-step algebra problem with addition and multiplication we must remove the numbers from  so it is by itself on one side of the equation.

To do this we first look to see if a number is being added or subtracted from .

In this case a number is being added so we must subtract the number,  , from each side of the equation:

Perform the math so that our equation becomes .

Then we divide each side of the equation by the number that is in front of , to get  by itself 

Perform the math to find the answer 

Example Question #21 : How To Solve Two Step Equations With Integers In Pre Algebra

Solve for  if

Possible Answers:

Correct answer:

Explanation:

To perform a two-step algebra problem with addition and division we must remove the numbers from  so it is by itself on one side of the equation.

To do this we first look to see if a number is being added or subtracted from .

In this case a number is being subtracted so we must add the number,  , to each side of the equation 

Perform the math so our equation becomes

Then we multiply each side of the equation by the number that is under , to get  by itself 

Perform the math to find the answer 

Example Question #21 : How To Solve Two Step Equations With Integers In Pre Algebra

Solve for  if

Possible Answers:

Correct answer:

Explanation:

The problem above is a two-step algebra problem with distribution.

To solve you must first distribute the  outside of the parentheses to both of the numbers inside my multiplying.

Perform the multiplication with  and each of the individual numbers to get our new equation, 

Then we must get our variable, , by itself.

We must subtract the number,  , from each side of the equation 

Perform the math so our equation becomes .

Then we divide each side of the equation by the number that is in front of  to get  by itself 

Solve to find the answer .

Example Question #181 : Algebraic Equations

Solve for  if

Possible Answers:

Correct answer:

Explanation:

When there are variables and numbers on each side of the equation, to solve we must move the variables onto one side and the numbers onto the other.

To do this we put all of the variables on the right side of the equal sign by subtracting  from the left and right side of the equation to have 

When adding or subtracting variables you only add or subtract the numbers in front of the variables. If there is no number the number value is .

Perform the math: .

Then to get all of the integers to the left side we will subtract  from the right and left side of the equation to have 

Perform the math:

At this point we must divide each side of the equation by the number that is in front of  to get  by itself 

Perform the math to find the answer 

The answer is .

Example Question #441 : High School Math

Solve for  if .

Possible Answers:

Correct answer:

Explanation:

To perform a two step algebra problem with addition and multiplication, we must remove the constants from  so that it is by itself on one side of the equation.

To do this we first look to see if a number is being added or subtracted from .

In this case a number is being added so we must subtract the number,  , from each side of the equation:

Perform the math to make our equation look like .

Then, we divide each side of the equation by the constant attached to  to get  by itself:

The division yields .

Example Question #442 : High School Math

Solve for  if .

Possible Answers:

Correct answer:

Explanation:

To perform a two step algebra problem with addition and division, we must remove the constants from  so that it is by itself on one side of the equation.

To do this we first look to see if a number is being added or subtracted from .

In this case a number is being subtracted, so we must add the number,  , to each side of the equation:

Perform the math to see that that our equation looks like .

Then we multiply each side of the equation by the constant attached to  to get  by itself:

Perform the multiplication to find .

Example Question #443 : High School Math

Solve for  if .

Possible Answers:

Correct answer:

Explanation:

The problem above is a two-step algebra problem with distribution.

To solve you must first distribute the  outside of the parentheses through the numbers inside by multiplying.

Remember, when you distribute a negative, both of the numbers inside the parentheses are being multiplied by a negative number, so they must both flip signs.

Our problem now looks like .

Then we must isolate our variable, .

We must subtract the number,  , from each side of the equation:

Perform the math so that our equation looks like .

Then divide each side of the equation by the constant attached to  to get  by itself:

Solve the math to find the answer, .

Learning Tools by Varsity Tutors