20+4a=12a

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Solution for 20+4a=12a equation: 



20+4a=12a

We move all terms to the left:

20+4a-(12a)=0

We add all the numbers together, and all the variables

-8a+20=0

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

-8a=-20

a=-20/-8

a=2+1/2

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