3(-7x-9)=-216

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Solution for 3(-7x-9)=-216 equation: 



3(-7x-9)=-216

We move all terms to the left:

3(-7x-9)-(-216)=0

We add all the numbers together, and all the variables

3(-7x-9)+216=0

We multiply parentheses

-21x-27+216=0

We add all the numbers together, and all the variables

-21x+189=0

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

-21x=-189

x=-189/-21

x=+9

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