Question

Please answer its do in 2 hours

Answer 1

both are reciprocals

Explanation:

15.

`(5)/(8)\cdot (16)/(20)\\\\=(5)/(8)\cdot(8)/(5)=1`

so they are reciprocals

17.

`(2)/(3)\cdot(12)/(18)\\\\=(2)/(3)\cdot (3)/(2)=1`

so they are reciprocals