6x+3(x+3)=-90

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Solution for 6x+3(x+3)=-90 equation: 



6x+3(x+3)=-90

We move all terms to the left:

6x+3(x+3)-(-90)=0

We add all the numbers together, and all the variables

6x+3(x+3)+90=0

We multiply parentheses

6x+3x+9+90=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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