# Chapter 2 - Section 2.1 - The Addition Property of Equality - Exercise Set - Page 120: 57

x=$\triangle$-$\square$

#### Work Step by Step

2x+$\triangle$=3x+$\square$ First subtract 2x from both sides $\triangle$=3x-2x+$\square$ $\triangle$=x+$\square$ $\triangle$-$\square$=x x=$\triangle$-$\square$

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