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If (5/3)^(-5)xx(5/3)^(11)=(5/3)^(8x) , t...

If `(5/3)^(-5)xx(5/3)^(11)=(5/3)^(8x)` , than `x=?`
(a)`-1/2` (b) `-3/4` (c)`3/4\ \ ` (d) `4/3`

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