# Chapter 8 - Polynomials and Factoring - Cumulative Test Prep - Multiple Choice - Page 528: 2

I) $18$

#### Work Step by Step

Substitute $b$ in the first equation with the second $a+2=2a-16$ Subtract $2a$ and $-2$ from both sides $-a=-18$ Multiply the equation by $-1$ $a=18$

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.