# Chapter 3 - Section 3.4 - Linear Equations in One Variable and Problem Solving - Exercise Set: 17

$30-x=3(x+6)$ $x=3$

#### Work Step by Step

$30-x=3(x+6)$ $\longrightarrow$distributive property $30-x=3x+18$ $\longrightarrow$addition property $30-x-18+x=3x+18-18+x$ $\longrightarrow$simplify $12=4x$ $\longrightarrow$multiplication property $12\div4=4x\div4$ $\longrightarrow$simplify $3=x$

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.