Question

By what number should (-11/7)^-1 be divided so that the quotient is (-22/7)^-1?

Answer 1

let the number used to divide=x

-12^(-1)/x= (2/3^)(-1)

-12^(-1)= (2×x/3)^-1

12=(2×x/3)^-1

12=(2×x)^-1/3^-1

12=-2×x/-3

12×-3=-2×x

-36=-2×x

-36/-2=x

x=18

18 is the number whic should -12^(-1) be divided so that the quotient may be (2/3)^-1

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