30+x=(2x-12)

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Solution for 30+x=(2x-12) equation: 



30+x=(2x-12)

We move all terms to the left:

30+x-((2x-12))=0



We calculate terms in parentheses: -((2x-12)), so:

(2x-12)

We get rid of parentheses

2x-12

Back to the equation:

-(2x-12)



We get rid of parentheses

x-2x+12+30=0

We add all the numbers together, and all the variables

-1x+42=0

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

-x=-42

x=-42/-1

x=+42

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