18-3x=x+30

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Solution for 18-3x=x+30 equation: 



18-3x=x+30

We move all terms to the left:

18-3x-(x+30)=0

We get rid of parentheses

-3x-x-30+18=0

We add all the numbers together, and all the variables

-4x-12=0

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

-4x=12

x=12/-4

x=-3

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