SOLUTION: Solve for x: 12/1+5e^(-x) = 7

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Question 917694: Solve for x:
12/1+5e^(-x) = 7
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You didn't use parentheses but I'm assuming this is what you mean.
12%2F%281%2B5e%5E%28-x%29%29=7
12=7%281%2B5e%5E%28-x%29%29
1%2B5e%5E%28-x%29=12%2F7
5e%5E%28-x%29=12%2F7-7%2F7
5e%5E%28-x%29=5%2F7
e%5E%28-x%29=1%2F7
-x=ln%281%2F7%29
x=-ln%281%2F7%29
x=ln%28%281%2F7%29%5E%28-1%29%29
highlight%28x=ln%287%29%29