# Chapter 1 - Equations and Inequalities - Exercise Set 1.3: 12

$x=\frac{15}{2}$

#### Work Step by Step

Write an equation. $y_{1}+3=y_{2}$ Substitute for $y_{1}$ and $y_{2}$. $(10x+6)+2=12x-7$ $10x+8=12x-7$ $15=2x$ $x=\frac{15}{2}$

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