-80+4a=28=5a

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Solution for -80+4a=28=5a equation: 



-80+4a=28=5a

We move all terms to the left:

-80+4a-(28)=0

We add all the numbers together, and all the variables

4a-108=0

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

4a=108

a=108/4

a=27

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