Question

Find two numbers whose sum is 1 and whose difference is -9.

Answer 1

Explanation:

Answer 2

-4,5

Explanation:

Set up two equations:

1. x+y = 1

2. x-y=-9

Solve it algebraically. You can use elimination or substitution.

Elimination:

x+y=1

- x-y=-9

______

2y=10

y=5

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Now you can substitute:

x+y=1

x+5=1

x=-4

Thus, x=-4 and y=5.