Algebra Question

Question

The sum of two numbers is 12 and their difference is -2. What are the two numbers?

Answer 1

7 and 5 sum to 12

5 - 7 = -2 for their difference

x+y = 12

x-y =-2 add the two equations to eliminate y

2x = 14

x = 7

y = 12-7 = 5