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QUESTION
a) 2^x = 27, 3^y = 128 , find the x.y b) 645^{x+y} = 64 , 5^{x-1} = \frac {16}{5} , find the 5^y c) 5^a . 3^b = 45, 3^a . 5^b = 75 , find the a + b...
a)
