Question

The sum of two numbers is -20 and the difference of the numbers is 2. What are the two numbers?

Answer 1

Explanation:

x + y = -20

x - y = 2

x = y + 2

->

y + 2 + y = -20

2y = -22

y = -11

x = y + 2 = -11 + 2 = -9