6x+18=3x-3

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Solution for 6x+18=3x-3 equation: 



6x+18=3x-3

We move all terms to the left:

6x+18-(3x-3)=0

We get rid of parentheses

6x-3x+3+18=0

We add all the numbers together, and all the variables

3x+21=0

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

3x=-21

x=-21/3

x=-7

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