15a-80=4a-7

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Solution for 15a-80=4a-7 equation: 



15a-80=4a-7

We move all terms to the left:

15a-80-(4a-7)=0

We get rid of parentheses

15a-4a+7-80=0

We add all the numbers together, and all the variables

11a-73=0

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

11a=73

a=73/11

a=6+7/11

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