Question

The product of two rational numbers is -4/7 . If one of the number is 1/7 , then find the other

Answer 1

Answer:

other number will be -4

Step-by-step explanation:

let two rational number whose product is -4\7 be x nd y

then

x.y=-4/7.

x =1/7. (as one of the number is 1/7)

then y =-4/7/1/7

y =-4

Answer 2

Step-by-step explanation:

The product of two rational numbers = -4/7

1st no. = 1/7

Let 2nd no. be a.

So,

    a x 1/7 = - 4/7

=> a =  (- 4/7 ) x (7/1)

=> a = (-4 x 7 )/ 7

=> a = -4

∴ The other no. is -4.          ( Ans )

HOPE THIS IS HELPFUL !!! : )