-20=-2x-4

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Solution for -20=-2x-4 equation: 



-20=-2x-4

We move all terms to the left:

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

We get rid of parentheses

2x+4-20=0

We add all the numbers together, and all the variables

2x-16=0

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

2x=16

x=16/2

x=8

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