simplify (3/4)^-2×(8/9)^-1
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Step-by-step explanation:
(a/b)^-1=b/a
(3/4)^-2= (4/3)² = 4²/3²=16/9
(8/9)^-1 =9/8
16/9 ×9/8 = 16×9/8×9 =2
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