All Common Core: 8th Grade Math Resources
Example Questions
Example Question #131 : Expressions & Equations
Select the option that describes the solution(s) for the following equation:
Infinitely many solutions
One solution
No solution
One solution
Let's begin by discussing our answer choices:
In order for an equation to have no solution, the equation, when solved, must equal a false statement; for example,
In order for an equation to have one solution, the equation, when solved for a variable, but equal a single value; for example,
In order for an equation to have infinitely many solutions, the equation, when solved, must equal a statement that is always true; for example,
To answer this question, we can solve the equation:
This equation equals a single value; thus, the correct answer is one solution.
Example Question #132 : Expressions & Equations
Select the option that describes the solution(s) for the following equation:
One solution
Infinitely many solutions
No solution
Infinitely many solutions
Let's begin by discussing our answer choices:
In order for an equation to have no solution, the equation, when solved, must equal a false statement; for example,
In order for an equation to have one solution, the equation, when solved for a variable, but equal a single value; for example,
In order for an equation to have infinitely many solutions, the equation, when solved, must equal a statement that is always true; for example,
To answer this question, we can solve the equation:
This equation equals a statement that is always true; thus, the correct answer is infinitely many solutions.
Example Question #2 : Solving Equations And Inequallities
Solve for :
can be simplified to become
Then, you can further simplify by adding 5 and to both sides to get
.
Then, you can divide both sides by 5 to get .
Example Question #1 : Systems Of Equations
Solve for :
To solve for , you must first combine the
's on the right side of the equation. This will give you
.
Then, subtract and
from both sides of the equation to get
.
Finally, divide both sides by to get the solution
.
Example Question #131 : Expressions & Equations
Solve for :
First, combine like terms within the equation to get
.
Then, add and subtract
from both sides to get
.
Finally, divide both sides by to get the solution of
.
Example Question #14 : Systems Of Equations
Solve for .
Cannot be determined
Subtract x from both sides of the second equation.
Divide both sides by to get
.
Plug in y to the other equation.
Divide 10 by 5 to eliminate the fraction, yielding .
Distribute the 2 to get .
Add to each side, and subtract 15 from each side to get
.
Divide both sides by 7 to get , which simplifies to
.
Example Question #2 : Solving Equations And Inequallities
Solve for :
Combine like terms on the left side of the equation:
Use the distributive property to simplify the right side of the equation:
Next, move the 's to one side and the integers to the other side:
Example Question #2283 : Algebra 1
Solve for :
First. combine like terms to get
.
Then, add and subtract
from both sides to separate the terms.
This gives you .
Finally, divide both sides by to get a solution of
.
Example Question #271 : Equations
Solve for :
None of the other answers
First, you must multiply the left side of the equation using the distributive property.
This gives you .
Next, subtract from both sides to get
.
Then, divide both sides by to get
.
Example Question #5 : Solve Linear Equations With Rational Number Coefficients: Ccss.Math.Content.8.Ee.C.7b
Solve for
In order to solve for , we need to isolate the
to one side of the equation.
For this problem, we need to multiply each side by
Next, we need to subtract from each side:
All Common Core: 8th Grade Math Resources
