Question

-10x-5y=
5
-4x+5y=
23

Answer 1

x=1 y=-4

Step-by-step explanation:

We add the given eqns. to get, (2x+5y)+(3x−5y)=−18+23

∴5x=5,or,x=1.

To get y, we use, x=1 in the first eqn. & get, 2+5y=−18, or, 5y=−20, so that, y=−4.