a+(-8.5)=21.7

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Solution for a+(-8.5)=21.7 equation: 



a+(-8.5)=21.7

We move all terms to the left:

a+(-8.5)-(21.7)=0

We add all the numbers together, and all the variables

a-30.2=0

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

a=30.2

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