Question

Write down the pair of integers whose sum is (_8)and difference is (_15)

Answer 1

let one of the integer be x

other integer = y

Atq, their sum is 8

x+y = 8

x = 8-y (equation 1)

Their difference is 15

x-y = 15

x = 15 + y (equation 2)

From 1 and 2

8-y = 15+y

-y - y = 15-8

-2y = 7

y = 7/-2

y = -3.5

Therefore, x = 11.5