### Home > CAAC > Chapter 4 > Lesson 4.2.4 > Problem 4-101

4-101.

Start by writing an equation for the word problem.

Solve the equation for *x*.

Did you show all of your work?

How can you check your answer?

(3*x* + 18) – *x* = 4

2*x* + 18 = 4

2*x* = −14

*x* = −7