Question

What is the solution to the system of equations?
2x+y=- 4
X-y=4

Answer 1

x = 0, y = -4

Explanation:

Add these equations together:

`2x + y = -4\\x - y = 4`

3x = 0

divide both sides by 3

x = 0

substitute this into the equation x - y = 4

0 - y = 4

y = -4