-20=-4(x+-2)

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Solution for -20=-4(x+-2) equation: 



-20=-4(x+-2)

We move all terms to the left:

-20-(-4(x+-2))=0

We add all the numbers together, and all the variables

-(-4(x-2))-20=0



We calculate terms in parentheses: -(-4(x-2)), so:

-4(x-2)

We multiply parentheses

-4x+8

Back to the equation:

-(-4x+8)



We get rid of parentheses

4x-8-20=0

We add all the numbers together, and all the variables

4x-28=0

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

4x=28

x=28/4

x=7

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