Question

Please answer this one

Answer 1

Multiply the first equation by 3 and add to the second equation.

3x - 3y = -9

x + 3y = 5

-------------------

4x = -4

x = -1

You are correct.

Answer 2

x - y = -3

x + 3y = 5

---------------subtract

-4y = -8

y = 2

x - 2 = -3

x = -1

answer

x = -1