Question

Solve each system of linear equations by adding or subtracting.

4x - 5y = 7
3x + 5y = -14

Answer 1

I think the answer is around -56

Answer 2

(x, y) = (-1, -11/5)

Explanation:

Add together the two equations. We get:

(4x - 5y) + (3x + 5y) = 7 + (-14).

Simplifing we get:

7x = -7

x = -1.

So, y = -11/5