Question

The sum of two numbers is 33 and the difference is 9. What are the numbers?​

Answer 1

21 & 12

Explanation:

let the sum of x and y be 33.. so,

x + y = 33

x - y = 9

x = 9 + y

x + y = 33

9 + y + y = 33

9 + 2y = 33

2y = 24

y = 24/2

y = 12

similarly,

x + y = 33

x + 12 = 33

x = 21

hence, sum: 21 + 12 = 33

difference : 21 - 12 = 9