90=2x+(4x-12)

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Solution for 90=2x+(4x-12) equation: 



90=2x+(4x-12)

We move all terms to the left:

90-(2x+(4x-12))=0



We calculate terms in parentheses: -(2x+(4x-12)), so:

2x+(4x-12)

We get rid of parentheses

2x+4x-12

We add all the numbers together, and all the variables

6x-12

Back to the equation:

-(6x-12)



We get rid of parentheses

-6x+12+90=0

We add all the numbers together, and all the variables

-6x+102=0

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

-6x=-102

x=-102/-6

x=+17

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