Question

by what no. should (1/2) ^-1 be multiplied so that the product may be equal to (-4/7) ^-1​

Answer 1

let the no to be multiplied be x

so,

1/2^-1 * x=(-4/7)^-1

2*x=(-7/4). (a^-1=1/a^1 and vice versa)

x=(-7/4*2)

x=(-7)/8