42=8x-2(x+9)

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Solution for 42=8x-2(x+9) equation: 



42=8x-2(x+9)

We move all terms to the left:

42-(8x-2(x+9))=0



We calculate terms in parentheses: -(8x-2(x+9)), so:

8x-2(x+9)

We multiply parentheses

8x-2x-18

We add all the numbers together, and all the variables

6x-18

Back to the equation:

-(6x-18)



We get rid of parentheses

-6x+18+42=0

We add all the numbers together, and all the variables

-6x+60=0

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

-6x=-60

x=-60/-6

x=+10

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