(X+9)+(11x-3)=90

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Solution for (X+9)+(11x-3)=90 equation: 



(X+9)+(11X-3)=90

We move all terms to the left:

(X+9)+(11X-3)-(90)=0

We get rid of parentheses

X+11X+9-3-90=0

We add all the numbers together, and all the variables

12X-84=0

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

12X=84

X=84/12

X=7

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