if x/y=(-1/3)^-3 ÷(2/3)^-4 find the valu of (x/y)^-3
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If x/y = 2/3, then (x + y)/(x - y) = ?
A. 5
B. 1/5
C. -1/6
D. -1/5
E. -5
Any x and y satisfying x/y = 2/3 should give the same value for (x + y)/(x - y).
Say x=2 and y=3, then (x + y)/(x - y) = (2 + 3)/(2-3) = -5.
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