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2e+3=-3e-22
We move all terms to the left:
2e+3-(-3e-22)=0
We get rid of parentheses
2e+3e+22+3=0
We add all the numbers together, and all the variables
5e+25=0
We move all terms containing e to the left, all other terms to the right
5e=-25
e=-25/5
e=-5
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