Question

The sum of two rational numbers is -4/5,If one of the number is -7/20, the other number is_________​

Answer 1

Let the other number be X

- 7/20 + X = - 4/5

X = - 4/5 + 7/20

LCM = 20

= ( - 4 x 4 + 7 x 1 ) / 20

= ( - 16 + 7 ) / 20

= - 9/20

So , the other number is - 9/20