Question

5. The product of two rational number is -3/7 . If one of them is 5/ 21 find the other.​

Answer 1

Answer:

9/5.

Step-by-step explanation:

The product of two rational number is = -3/7

One of them is = 5/21

the other =

Let the other number be x

5/21× x = -3/7

x = -3/7 ÷ 5/21

x = -3/7 × 21/5

x = -9/5.

I hope you understand.

Answer 2

Answer:

the other number is 9/5

Step-by-step explanation: let the other number be 'x'

Xx5/21 = -3/7

x= -3/7Divided by 5/21

x= -3/7x21/51

x=3x3/5

x= -9/5

so the other number is 9/5

please brainliest if it helped you