20=-2(x-50)

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Solution for 20=-2(x-50) equation: 



20=-2(x-50)

We move all terms to the left:

20-(-2(x-50))=0



We calculate terms in parentheses: -(-2(x-50)), so:

-2(x-50)

We multiply parentheses

-2x+100

Back to the equation:

-(-2x+100)



We get rid of parentheses

2x-100+20=0

We add all the numbers together, and all the variables

2x-80=0

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

2x=80

x=80/2

x=40

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