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Question #cdbe1

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Dec 24, 2016

#7log(16/15)-5log(24/25)+3log(81/80)#

#=log(16/15)^7-log(24/25)^5+log(81/80)^3#

#=log(2^4/(3xx5))^7-log((2^3xx3)/5^2)^5+log(3^4/(2^4xx5))^3#

#=log((2^28xx5^10xx3^12)/(3^7xx5^7xx2^15xx3^5xx2^12xx5^3))#

#=log2#

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