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e/5-12=-3
We move all terms to the left:
e/5-12-(-3)=0
We add all the numbers together, and all the variables
e/5-9=0
We multiply all the terms by the denominator
e-9*5=0
We add all the numbers together, and all the variables
e-45=0
We move all terms containing e to the left, all other terms to the right
e=45
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