Answers

2015-10-22T22:54:58+05:30
Hi there,
10/3*3^x*3^x-1=81
10.3^x-1-3^x-1=81
9.3^x-1=81
3^x-1=81/9=9=3^2
x-1=2
x=3
i hope this helps u..
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