-40+40=20x+20

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Solution for -40+40=20x+20 equation: 



-40+40=20x+20

We move all terms to the left:

-40+40-(20x+20)=0

We add all the numbers together, and all the variables

-(20x+20)=0

We get rid of parentheses

-20x-20=0

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

-20x=20

x=20/-20

x=-1

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