9+2x=-7x-90

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Solution for 9+2x=-7x-90 equation: 



9+2x=-7x-90

We move all terms to the left:

9+2x-(-7x-90)=0

We get rid of parentheses

2x+7x+90+9=0

We add all the numbers together, and all the variables

9x+99=0

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

9x=-99

x=-99/9

x=-11

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