SOLUTION: solve the equation
5/1+2e^-x = 4
please help me solve the equation
Algebra.Com
Question 197296: solve the equation
5/1+2e^-x = 4
please help me solve the equation
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation
Multiply both sides by
Distribute
Subtract 4 from both sides
Combine like terms.
Divide both sides by 8
Rewrite as
Cross multiply
Take the natural log of both sides (to eliminate the base "e" and isolate "x")
So the solution is which approximates to 
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
solve the equation
5/1+2e^-x = 4
------------------
5/[1+2e^(-x)] = 4
[1+2e^(-x)] = 5/4
2e^(-x) = 1/4
e^(-x) = 1/8
-x = ln[1/8]
-x = -2.0794
x = 2.0794
===================
Cheers,
Stan H.
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