4e-1 = 7
Multiply both sides by e: 4 = 7e
Divide both sides by 7: 4/7 = e
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m = e*c-2
e+7=3 subtract 7 from both sides pay attention in math class
well albert figured it out in 123 ad it equals mc2
14
9 work shown: e-7=16 +7= 0 (you need to get x alone and what you do to one side of the = sign you must do to the other) then do 16- 7= 9 so your answer is: e=9