-3(a+1)=6a+12

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Solution for -3(a+1)=6a+12 equation: 



-3(a+1)=6a+12

We move all terms to the left:

-3(a+1)-(6a+12)=0

We multiply parentheses

-3a-(6a+12)-3=0

We get rid of parentheses

-3a-6a-12-3=0

We add all the numbers together, and all the variables

-9a-15=0

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

-9a=15

a=15/-9

a=-1+2/3

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