CPM Homework Banner

Home > AC > Chapter 7 > Lesson 7.3.1 > Problem 7-88

7-88.
  1. Solve each of the following equations for x. Homework Help ✎

    1. x/6 = 7/3

    2. 3x + 2 = 7x − 8

    3. 6/x = 4/x+1

    4. 6(x − 4) = 42

Multiply both sides by 18.

3x = 42

Divide both sides by 3.

x = 14

Don't forget to check your solution!

Subtract 3x from both sides.

3x + 2 = 7x − 8
−3x = −3x
2 = 4x − 8

Add 8 to both sides.

2 = 4x − 8
+8 = +8
10 = 4x

Divide by 4.

Don't forget to check your answer!

See the hints in part (a).

See the hints in part (b).

Divide both sides by 6.