13a-17=87

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Solution for 13a-17=87 equation: 



13a-17=87

We move all terms to the left:

13a-17-(87)=0

We add all the numbers together, and all the variables

13a-104=0

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

13a=104

a=104/13

a=8

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