20+3a=8a

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Solution for 20+3a=8a equation: 



20+3a=8a

We move all terms to the left:

20+3a-(8a)=0

We add all the numbers together, and all the variables

-5a+20=0

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

-5a=-20

a=-20/-5

a=+4

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