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(E)=100-0.5E
We move all terms to the left:
(E)-(100-0.5E)=0
We add all the numbers together, and all the variables
E-(-0.5E+100)=0
We get rid of parentheses
E+0.5E-100=0
We add all the numbers together, and all the variables
1.5E-100=0
We move all terms containing E to the left, all other terms to the right
1.5E=100
E=100/1.5
E=66+1/1.5
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