(7x-20)+(4x)=90

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Solution for (7x-20)+(4x)=90 equation: 



(7x-20)+(4x)=90

We move all terms to the left:

(7x-20)+(4x)-(90)=0

We add all the numbers together, and all the variables

4x+(7x-20)-90=0

We get rid of parentheses

4x+7x-20-90=0

We add all the numbers together, and all the variables

11x-110=0

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

11x=110

x=110/11

x=10

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