2a-9+7.5=15.5

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Solution for 2a-9+7.5=15.5 equation: 



2a-9+7.5=15.5

We move all terms to the left:

2a-9+7.5-(15.5)=0

We add all the numbers together, and all the variables

2a-17=0

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

2a=17

a=17/2

a=8+1/2

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