4x=2x-40

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Solution for 4x=2x-40 equation: 



4x=2x-40

We move all terms to the left:

4x-(2x-40)=0

We get rid of parentheses

4x-2x+40=0

We add all the numbers together, and all the variables

2x+40=0

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

2x=-40

x=-40/2

x=-20

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