Question

2x + y = -5 -2x + y = -1 elimination

Answer 1

Answer:x=-3\2 and y=

Explanation:

2x+y=-5

-2x+y=1

Multiply eqn. 1 and 2 by

4x+2y=-10

_ 4x+2y=2

8x=-12

x=-12\8=-3\2

For y.

By using eqn. 1

2 x -3\2 +y=-5

-3+y=-5

y=-2