(x)+(x+4)+(3x-9)=90

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Solution for (x)+(x+4)+(3x-9)=90 equation: 



(x)+(x+4)+(3x-9)=90

We move all terms to the left:

(x)+(x+4)+(3x-9)-(90)=0

We get rid of parentheses

x+x+3x+4-9-90=0

We add all the numbers together, and all the variables

5x-95=0

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

5x=95

x=95/5

x=19

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