Question

If the sum of two rational no is 21/8.Ifone of them is -2/5,find the other​

Answer 1

Step-by-step explanation:

GIVEN : sum of two rational numbers is = 21/8

one number is = -2/5

so, the second number will be = sum of 2 numbers -- one number

= 21/8 -(-2/5)

= 21/8+2/5

LCM will be 40

so, 2nd number = 21×5 + 2×8 /40

= 105+16/40

=121/40

hope it helps