40=20x-20

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Solution for 40=20x-20 equation: 



40=20x-20

We move all terms to the left:

40-(20x-20)=0

We get rid of parentheses

-20x+20+40=0

We add all the numbers together, and all the variables

-20x+60=0

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

-20x=-60

x=-60/-20

x=+3

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