-42=6(-1+2x)

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Solution for -42=6(-1+2x) equation: 



-42=6(-1+2x)

We move all terms to the left:

-42-(6(-1+2x))=0

We add all the numbers together, and all the variables

-(6(2x-1))-42=0



We calculate terms in parentheses: -(6(2x-1)), so:

6(2x-1)

We multiply parentheses

12x-6

Back to the equation:

-(12x-6)



We get rid of parentheses

-12x+6-42=0

We add all the numbers together, and all the variables

-12x-36=0

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

-12x=36

x=36/-12

x=-3

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