# Chapter 1 - Tools of Geometry - 1-2 Points, Lines, and Planes - Practice and Problem-Solving Exercises - Page 19: 78

x=4

#### Work Step by Step

To solve an equation, isolate the variable on one side of the equation. $x+2x-6=6$ $3x-6=6$ $3x-6+6=6+6$ $3x=12$ $3x\div3=12\div3$ $x=4$

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