12.5a-9=8.5a-37

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Solution for 12.5a-9=8.5a-37 equation: 



12.5a-9=8.5a-37

We move all terms to the left:

12.5a-9-(8.5a-37)=0

We get rid of parentheses

12.5a-8.5a+37-9=0

We add all the numbers together, and all the variables

4a+28=0

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

4a=-28

a=-28/4

a=-7

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