3a+12=6a+30

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Solution for 3a+12=6a+30 equation: 



3a+12=6a+30

We move all terms to the left:

3a+12-(6a+30)=0

We get rid of parentheses

3a-6a-30+12=0

We add all the numbers together, and all the variables

-3a-18=0

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

-3a=18

a=18/-3

a=-6

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