12=5x+(3x+30)

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Solution for 12=5x+(3x+30) equation: 



12=5x+(3x+30)

We move all terms to the left:

12-(5x+(3x+30))=0



We calculate terms in parentheses: -(5x+(3x+30)), so:

5x+(3x+30)

We get rid of parentheses

5x+3x+30

We add all the numbers together, and all the variables

8x+30

Back to the equation:

-(8x+30)



We get rid of parentheses

-8x-30+12=0

We add all the numbers together, and all the variables

-8x-18=0

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

-8x=18

x=18/-8

x=-2+1/4

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