X+18=3x-3

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Solution for X+18=3x-3 equation: 



X+18=3X-3

We move all terms to the left:

X+18-(3X-3)=0

We get rid of parentheses

X-3X+3+18=0

We add all the numbers together, and all the variables

-2X+21=0

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

-2X=-21

X=-21/-2

X=10+1/2

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