30=4a-12+2a

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Solution for 30=4a-12+2a equation:



30=4a-12+2a
We move all terms to the left:
30-(4a-12+2a)=0
We add all the numbers together, and all the variables
-(6a-12)+30=0
We get rid of parentheses
-6a+12+30=0
We add all the numbers together, and all the variables
-6a+42=0
We move all terms containing a to the left, all other terms to the right
-6a=-42
a=-42/-6
a=+7

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