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5.6a+15=76.6
We move all terms to the left:
5.6a+15-(76.6)=0
We add all the numbers together, and all the variables
5.6a-61.6=0
We move all terms containing a to the left, all other terms to the right
5.6a=61.6
a=61.6/5.6
a=11+7.105427357601E-15/5.6
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