By what number should [1/-2]^-1 be multiplied so that the product be equal to [4/7]^-1 ?
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Answer:
Let the number be =
x So, (1/2)-1 × x
= (-4/7)-1 1/(1/2) × x
= 1/(-4/7) x
=(-7/4) / (2/1)
= (-7/4) × (1/2)
= -7/8
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