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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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