4a+12=6a-30

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Solution for 4a+12=6a-30 equation: 



4a+12=6a-30

We move all terms to the left:

4a+12-(6a-30)=0

We get rid of parentheses

4a-6a+30+12=0

We add all the numbers together, and all the variables

-2a+42=0

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

-2a=-42

a=-42/-2

a=+21

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