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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-8(-15)-4x)+220=0



We calculate terms in parentheses: -(-8(-15)-4x), so:

-8(-15)-4x

determiningTheFunctionDomain
-4x-8(-15)

We add all the numbers together, and all the variables

-4x+120

Back to the equation:

-(-4x+120)



We get rid of parentheses

4x-120+220=0

We add all the numbers together, and all the variables

4x+100=0

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

4x=-100

x=-100/4

x=-25

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