220=-8(-8-7x)-4x

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Solution for 220=-8(-8-7x)-4x equation: 



220=-8(-8-7x)-4x

We move all terms to the left:

220-(-8(-8-7x)-4x)=0

We add all the numbers together, and all the variables

-(-8(-7x-8)-4x)+220=0



We calculate terms in parentheses: -(-8(-7x-8)-4x), so:

-8(-7x-8)-4x

We add all the numbers together, and all the variables

-4x-8(-7x-8)

We multiply parentheses

-4x+56x+64

We add all the numbers together, and all the variables

52x+64

Back to the equation:

-(52x+64)



We get rid of parentheses

-52x-64+220=0

We add all the numbers together, and all the variables

-52x+156=0

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

-52x=-156

x=-156/-52

x=+3

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