4x+40=2x-20

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Solution for 4x+40=2x-20 equation: 



4x+40=2x-20

We move all terms to the left:

4x+40-(2x-20)=0

We get rid of parentheses

4x-2x+20+40=0

We add all the numbers together, and all the variables

2x+60=0

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

2x=-60

x=-60/2

x=-30

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