2x+20=7x+40

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Solution for 2x+20=7x+40 equation: 



2x+20=7x+40

We move all terms to the left:

2x+20-(7x+40)=0

We get rid of parentheses

2x-7x-40+20=0

We add all the numbers together, and all the variables

-5x-20=0

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

-5x=20

x=20/-5

x=-4

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