Question

The sum of two numbers is 13, the difference is 4. What are the numbers?.

Answer 1

a = 8.5

b = 4.5

Explanation:

let 2 number be a ,b

a + b = 13 (1)

a - b = 4 (2)

(1) + (2) = 2a = 13+4 = 17 -> a = 8.5

-> b = 8.5 -4 = 4.5