They are: 7, 14, 21 and 28
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4e-1 = 7 Multiply both sides by e: 4 = 7e Divide both sides by 7: 4/7 = e
0.125
e3x+5 x ex =7 e3x+5+x=7 4x+5=ln(7) x=(ln(7)-5)/4
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
e+7=3 subtract 7 from both sides pay attention in math class