(11x+4)+(7x-4)=90

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Solution for (11x+4)+(7x-4)=90 equation: 



(11x+4)+(7x-4)=90

We move all terms to the left:

(11x+4)+(7x-4)-(90)=0

We get rid of parentheses

11x+7x+4-4-90=0

We add all the numbers together, and all the variables

18x-90=0

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

18x=90

x=90/18

x=5

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