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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

6x-6(-1x-3)-90=0

We multiply parentheses

6x+6x+18-90=0

We add all the numbers together, and all the variables

12x-72=0

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

12x=72

x=72/12

x=6

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