All Pre-Algebra Resources
Solve for
Correct answer:
Explanation:
The goal is to isolate the variable to one side.
Subtract from each side of the equation:
Divide each side by :
Solve for :
Correct answer:
Explanation:
The goal is to isolate the variable to one side.
Divide each side by :
Take the square root of each side:
Solve for :
Correct answer:
Explanation:
The goal is to isolate the variable to one side.
Subtract from each side:
Divide each side by :
Take the cube root of each side:
Solve for :
Correct answer:
Explanation:
The goal is to isolate the variable to one side.
Subtract from each side:
Take the square root of each side:
Solve for .
Correct answer:
Explanation:
Step 1: Subtract from both sides:
Step 2: Divide both sides by :
Correct answer:
Explanation:
To solve two-step equations, first move everything that does not have the variable over to the other side of the equation. In order to move the -3 to the other side of the equation, you must do the opposite operation (addition). Keep in mind you must do the same step on each side of the equation every time you change something.
The equation should now look like this:
Next, isolate the variable by moving it to the other side of the equation. Do this by doing the opposite operation (division):
The result should be the following:
Correct answer:
Explanation:
To solve two-step equations, first move everything that does not have the variable over to the other side of the equation. In order to move the -2 to the other side of the equation, you must do the opposite operation (addition). Keep in mind you must do the same step on each side of the equation every time you change something.
The equation should now look like this:
Then, isolate the variable by moving the 7 to the other side of the equation. Do this by doing the opposite operation (division).
The result should be the following:
Correct answer:
Explanation:
To solve two-step equations, first move everything that does not have the variable over to the other side of the equation. In order to move the -38 to the other side of the equation, you must do the opposite operation (addition). Keep in mind you must do the same step on each side of the equation every time you change something.
The equation should now look like this:
Then, isolate the variable by moving the 15 to the other side of the equation. Do this by doing the opposite operation (division).
The result should be as follows:
Solve for x:
Correct answer:
Explanation:
In order to find x, you need to isolate it. If x isn't alone, you haven't finished solving the problem!
Step 1: subtract 14 from both sides of the equation
Step 2: divide both sides of the equation by 2
Solve for x:
Correct answer:
Explanation:
Step 1: subtract 4 from both sides
Step 2: divide both sides by -5 to isolate x
Solve:
Remember, a negative integer divided by another negative integer will have a positive answer.