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The solution of the equation 7^(logx)-5^...

The solution of the equation `7^(logx)-5^(logx+1)=3*5^(logx-1)-13*7 ^(logx-1)is` (a) an even number (b) rational number (c) irrational number (d) composite number

A

an even number

B

rational number

C

irrational number

D

composite number

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