SOLUTION: Solve the equation: 7log(base5)x-3 =15 Your help is greatly appreciated. Thank You

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Question 790595: Solve the equation: 7log(base5)x-3 =15 Your help is greatly appreciated. Thank You
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
log(base5)y = x means 5%5Ex+=y and a%2Alogb+=+logb%5Ea


7*log(base5)(x-3) = log(base5)(x-3)^7 = 15


5%5E15+=+%28x-3%29%5E7


7th root of (5^15) = x-3 = 7th root of (5^7 * 5^7 *5) = 25*7throot(5)


x= 25*7throot(5) + 3