# Chapter 1 - Equations and Inequalities - Exercise Set 1.2: 57

$x=19$

#### Work Step by Step

If you have trouble following the steps below, please review the order of operations (PEMDAS) or the distributive property. Note that, because we are told that $y=0$, the expression involving $x$ is also equal to zero. $y=4[x-(3-x)]-7(x+1)=0$ $4(x-3+x)-7x-7=0$ $4(2x-3)-7x-7=0$ $8x-12-7x-7=0$ $x-19=0$ $x=19$

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