3(9+7x)=-120

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Solution for 3(9+7x)=-120 equation: 



3(9+7x)=-120

We move all terms to the left:

3(9+7x)-(-120)=0

We add all the numbers together, and all the variables

3(7x+9)-(-120)=0

We add all the numbers together, and all the variables

3(7x+9)+120=0

We multiply parentheses

21x+27+120=0

We add all the numbers together, and all the variables

21x+147=0

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

21x=-147

x=-147/21

x=-7

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