Question 106647
Exponential equation without logs.  Solve for x:

(4/5)^(-4x+5)= 64/125

(4/5)^(-4x+5) = (4/5)^3

Since the bases are the same the exponents are equal:

-4x+5 = 3
-4x = -2
x = 1/2
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Cheers,
Stan H.