Question

Sum of two numbers 80 and difference is 40. Find two
numbers.

Answer 1

The two numbers are 20 and 60

Explanation:

Two numbers: x and y

x + y = 80

x - y = 40

x = y + 40

Substitute x

y + 40 + y = 80

2y + 40 = 80

2y = 40

y = 20

Substitute y, so x = 60