(2x-18)+x=90

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Solution for (2x-18)+x=90 equation: 



(2x-18)+x=90

We move all terms to the left:

(2x-18)+x-(90)=0

We add all the numbers together, and all the variables

x+(2x-18)-90=0

We get rid of parentheses

x+2x-18-90=0

We add all the numbers together, and all the variables

3x-108=0

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

3x=108

x=108/3

x=36

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