3(x+3)+3(x+1)=-12

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Solution for 3(x+3)+3(x+1)=-12 equation: 



3(x+3)+3(x+1)=-12

We move all terms to the left:

3(x+3)+3(x+1)-(-12)=0

We add all the numbers together, and all the variables

3(x+3)+3(x+1)+12=0

We multiply parentheses

3x+3x+9+3+12=0

We add all the numbers together, and all the variables

6x+24=0

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

6x=-24

x=-24/6

x=-4

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