-6a-9.5+7.5=20.5

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Solution for -6a-9.5+7.5=20.5 equation: 



-6a-9.5+7.5=20.5

We move all terms to the left:

-6a-9.5+7.5-(20.5)=0

We add all the numbers together, and all the variables

-6a-22.5=0

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

-6a=22.5

a=22.5/-6

a=-3+1.8/2.4

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