-3x+18=-2x+21

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Solution for -3x+18=-2x+21 equation: 



-3x+18=-2x+21

We move all terms to the left:

-3x+18-(-2x+21)=0

We get rid of parentheses

-3x+2x-21+18=0

We add all the numbers together, and all the variables

-1x-3=0

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

-x=3

x=3/-1

x=-3

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