Pre-Algebra : One-Step Equations

Study concepts, example questions & explanations for Pre-Algebra

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Example Questions

Example Question #11 : Evaluate Expressions: Ccss.Math.Content.6.Ee.A.2c

Solve for :

Possible Answers:

Correct answer:

Explanation:

Subtract  from both sides:

         

Your result should be:

Example Question #11 : One Step Equations

Solve for :

Possible Answers:

Correct answer:

Explanation:

Subtract 23 from both sides:

Your result should be:

Example Question #12 : One Step Equations

Solve for :

Possible Answers:

Correct answer:

Explanation:

Divide both sides of the equation by 3:

Example Question #13 : One Step Equations

Solve the following: 

Possible Answers:

Correct answer:

Explanation:

Since both numbers are the same sign (negative), we can add them. 

Remember to keep the sign! In this case, the answer is negative. 

Example Question #14 : One Step Equations

Solve for 

Possible Answers:

Correct answer:

Explanation:

In order to isolate  on one side, we add 8 to both sides. 

This gives us: 

Example Question #15 : One Step Equations

Solve. 

Possible Answers:

Correct answer:

Explanation:

Because the signs are different (63 is negative, 15 is positive) we can subtract: 

Remember: the largest number always keeps its sign!

Example Question #16 : One Step Equations

Solve for :

Possible Answers:

Correct answer:

Explanation:

To isolate , we must move all other numbers to the right hand side. Therefore, we must divide both sides by 4.

Example Question #18 : Evaluate Expressions: Ccss.Math.Content.6.Ee.A.2c

Solve for :

Possible Answers:

Correct answer:

Explanation:

To isolate , we must subtract 8 from both sides:

Example Question #17 : One Step Equations

Solve the following equation:

Possible Answers:

Correct answer:

Explanation:

In order to solve this equation, you have to isolate the variable to one side by reversing the operations done to it. Whatever is done on one side of the equals sign must be done on the other side of the equals sign as well. When the variable is by itself, it will be defined as whatever is left on the other side of the equals sign, and the equation is solved.

Subtract  from each side.

Example Question #21 : Evaluate Expressions: Ccss.Math.Content.6.Ee.A.2c

Solve for :

Possible Answers:

Correct answer:

Explanation:

Explanation:

Isolate the variable to one side.

Subtract  from both sides:

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