(3x-5)+(7x+20)=90

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Solution for (3x-5)+(7x+20)=90 equation: 



(3x-5)+(7x+20)=90

We move all terms to the left:

(3x-5)+(7x+20)-(90)=0

We get rid of parentheses

3x+7x-5+20-90=0

We add all the numbers together, and all the variables

10x-75=0

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

10x=75

x=75/10

x=7+1/2

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