3(x+9)=-12

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Solution for 3(x+9)=-12 equation: 



3(x+9)=-12

We move all terms to the left:

3(x+9)-(-12)=0

We add all the numbers together, and all the variables

3(x+9)+12=0

We multiply parentheses

3x+27+12=0

We add all the numbers together, and all the variables

3x+39=0

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

3x=-39

x=-39/3

x=-13

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