-20=-8(3+6x)+7(1+7x)

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Solution for -20=-8(3+6x)+7(1+7x) equation: 



-20=-8(3+6x)+7(1+7x)

We move all terms to the left:

-20-(-8(3+6x)+7(1+7x))=0

We add all the numbers together, and all the variables

-(-8(6x+3)+7(7x+1))-20=0



We calculate terms in parentheses: -(-8(6x+3)+7(7x+1)), so:

-8(6x+3)+7(7x+1)

We multiply parentheses

-48x+49x-24+7

We add all the numbers together, and all the variables

x-17

Back to the equation:

-(x-17)



We get rid of parentheses

-x+17-20=0

We add all the numbers together, and all the variables

-1x-3=0

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

-x=3

x=3/-1

x=-3

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