(x+9)-2x=90

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Solution for (x+9)-2x=90 equation: 



(x+9)-2x=90

We move all terms to the left:

(x+9)-2x-(90)=0

We add all the numbers together, and all the variables

-2x+(x+9)-90=0

We get rid of parentheses

-2x+x+9-90=0

We add all the numbers together, and all the variables

-1x-81=0

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

-x=81

x=81/-1

x=-81

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