18=-12+3*x

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Solution for 18=-12+3*x equation: 



18=-12+3x

We move all terms to the left:

18-(-12+3x)=0

We add all the numbers together, and all the variables

-(3x-12)+18=0

We get rid of parentheses

-3x+12+18=0

We add all the numbers together, and all the variables

-3x+30=0

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

-3x=-30

x=-30/-3

x=+10

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