Adding two fractions with negative exponents, don't know how shown answer is gotten.

(2/3)^-2 + (2/3)^-1 = 15/4 Can't find a matching example for this (Adding two fractions with negative exponents). How are they getting to that answer?
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1 Answer

????????????????????? " anser is gotten" ????????????????

????????? yu wanna get sumthun ?????????

(2/3)^-2 become (3/2)^+2 & (2/3)^-1 become (3/2)^+1....thats 3/2=1.5

(3/2)^2=9/4

so yu hav (9/4) + 3/2

=(9/4)+(6/4)=15/4
by

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