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-9+a/2=-5
We move all terms to the left:
-9+a/2-(-5)=0
We add all the numbers together, and all the variables
a/2-4=0
We multiply all the terms by the denominator
a-4*2=0
We add all the numbers together, and all the variables
a-8=0
We move all terms containing a to the left, all other terms to the right
a=8
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