30-78a=80

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Solution for 30-78a=80 equation: 



30-78a=80

We move all terms to the left:

30-78a-(80)=0

We add all the numbers together, and all the variables

-78a-50=0

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

-78a=50

a=50/-78

a=-25/39

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