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Answer:
-21/22 is the answer ok by
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Answer:
( x ÷ y )^-1 = x^-1 ÷ y^-1
{ (7/11) ÷ (-22/21) } = (7/11)^-1 ÷ (-22/21)^-1
{ (7/11) × (21/-22) } = (11/7) ÷ (21/-22)
-147/242 = (11/7) × (-22/21)
-147/242 = -242/147
Hence, ( x ÷ y )^-1 not equals to x^-1 ÷ y^-1
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