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9e-7=7e-11*
We move all terms to the left:
9e-7-(7e-11*)=0
We add all the numbers together, and all the variables
9e-(+7e)-7=0
We get rid of parentheses
9e-7e-7=0
We add all the numbers together, and all the variables
2e-7=0
We move all terms containing e to the left, all other terms to the right
2e=7
e=7/2
e=3+1/2
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