6a-4-8a=20

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Solution for 6a-4-8a=20 equation: 



6a-4-8a=20

We move all terms to the left:

6a-4-8a-(20)=0

We add all the numbers together, and all the variables

-2a-24=0

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

-2a=24

a=24/-2

a=-12

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