(2x-25)+(7x-75)=7x-20

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Solution for (2x-25)+(7x-75)=7x-20 equation: 



(2x-25)+(7x-75)=7x-20

We move all terms to the left:

(2x-25)+(7x-75)-(7x-20)=0

We get rid of parentheses

2x+7x-7x-25-75+20=0

We add all the numbers together, and all the variables

2x-80=0

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

2x=80

x=80/2

x=40

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