-3a+12a+6=7a+30

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Solution for -3a+12a+6=7a+30 equation: 



-3a+12a+6=7a+30

We move all terms to the left:

-3a+12a+6-(7a+30)=0

We add all the numbers together, and all the variables

9a-(7a+30)+6=0

We get rid of parentheses

9a-7a-30+6=0

We add all the numbers together, and all the variables

2a-24=0

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

2a=24

a=24/2

a=12

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