.5x-6=2x+21

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Solution for .5x-6=2x+21 equation: 



.5x-6=2x+21

We move all terms to the left:

.5x-6-(2x+21)=0

We get rid of parentheses

.5x-2x-21-6=0

We add all the numbers together, and all the variables

-1.5x-27=0

We move all terms containing x to the left, all other terms to the right

-1.5x=27

x=27/-1.5

x=-18

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