Question

Plz help due tomorrow and don't known how to do​

Answer 1

x = 2, y = -1

Explanation:

To find x, use elimination.

multiply everything in x - y = 3 by 2

(x - y = 3)2

that will now become 2x - 2y = 6

now line the equations up.

4x + 2y = 6

2x - 2y = 6

Now add everything going down.

4x + 2x is 6x, 2y and -2y cancel out, and 6 + 6 is 12. the equation is now:

6x = 12

divide on each side.

x = 2

to find y, substitute 2 into x - y = 3

2 - y = 3

-y = 1

y = -1