If (5.6)^x=(0.0056)^y=10^5 then 1/x-1/y=
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5.6=10^5/x
0.0056=10^5/y
5.6/0.0056=10^5(1/x-1/y)
1000=10^5(1/x-1/y)
10^3 =10^5(1/x-1/y)
3=5(1/x-1/y)
3/5=1/x-1/y
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