30+x=18+3x

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



30+x=18+3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

x-3x-18+30=0

We add all the numbers together, and all the variables

-2x+12=0

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

-2x=-12

x=-12/-2

x=+6

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