Question

the product of 2 rational numbers is -15/7.if one of them is -10/21,then find the other ?​

Answer 1

let the unknown number be x

$x \times \frac{ - 10}{21} = \frac{ - 15}{7} \\ x = \frac{ - 15}{7} \times \frac{ - 21}{10} \\ x = \frac{9}{2}$

hope it helps you,..and

pls mark me as the brainliest,...

Answer 2

hey buddy,

here is your answer..

let the 1sr rational no. be x

and 2nd = -10/21

according to the question.

x(-10/21) = -15/7

x = (-15/7)(21/-10)

x = 9/2

therefore,

1st rational no. = x = 9/2

hope it helps you..

thank you