2a+4a+6a=78

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Solution for 2a+4a+6a=78 equation: 



2a+4a+6a=78

We move all terms to the left:

2a+4a+6a-(78)=0

We add all the numbers together, and all the variables

12a-78=0

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

12a=78

a=78/12

a=6+1/2

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