(9+x)+9x=90

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



(9+x)+9x=90

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

9x+x+9-90=0

We add all the numbers together, and all the variables

10x-81=0

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

10x=81

x=81/10

x=8+1/10

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