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2.3a-9=27
We move all terms to the left:
2.3a-9-(27)=0
We add all the numbers together, and all the variables
2.3a-36=0
We move all terms containing a to the left, all other terms to the right
2.3a=36
a=36/2.3
a=15+1/1.5333333333333
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