3(j+1)=-12

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



3(j+1)=-12

We move all terms to the left:

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

We add all the numbers together, and all the variables

3(j+1)+12=0

We multiply parentheses

3j+3+12=0

We add all the numbers together, and all the variables

3j+15=0

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

3j=-15

j=-15/3

j=-5

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