4x+20=8x+40

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Solution for 4x+20=8x+40 equation: 



4x+20=8x+40

We move all terms to the left:

4x+20-(8x+40)=0

We get rid of parentheses

4x-8x-40+20=0

We add all the numbers together, and all the variables

-4x-20=0

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

-4x=20

x=20/-4

x=-5

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