20=-7(-2-2z)

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Solution for 20=-7(-2-2z) equation: 



20=-7(-2-2z)

We move all terms to the left:

20-(-7(-2-2z))=0

We add all the numbers together, and all the variables

-(-7(-2z-2))+20=0



We calculate terms in parentheses: -(-7(-2z-2)), so:

-7(-2z-2)

We multiply parentheses

14z+14

Back to the equation:

-(14z+14)



We get rid of parentheses

-14z-14+20=0

We add all the numbers together, and all the variables

-14z+6=0

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

-14z=-6

z=-6/-14

z=3/7

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