Question

The sum of two numbers is 1. The difference of the numbers is 9. What are 5 points

the two numbers?

Answer 1

The numbers are 5 and -4

Explanation:

let the numbers be =x and y

x+y=1—eqn 1

x-y=9—eqn 2

Add both equations

2x=10

x=5

Plug x=5 into eqn 2

5-y=9

5-9=y

y=-4