### Home > INT1 > Chapter A > Lesson A.1.7 > Problem A-72

A-72.

For each equation, a possible solution is given. Check to see if the given solution is correct.

Is

a solution to? Substitute the possible answer in for

*x*.If the numbers on both sides of the equation sign are true, then the possible answer is correct.

Yes

If

, then does ?Follow the steps in part (a).

No

Is

a solution to? Follow the steps in part (a).

If

then doesHow does the negative in front of the parentheses change what is inside?

Follow the steps in part (a).