Question

how to solve 2x-y=-5 4x+y=2 by using elimination

Answer 1

2x-y=-5
4x+y=2
then
2(2x-y=-5)
4x+y=2
then
4x-2y=-10
4x+y=2
then subtract, and 4x's get eliminated,
-3y=-12
then, divide both sides by -3,
y=4 there is your answer for y, now substitute it for a y in an origignal equation,

4x+4=2
then subtract both sides by 4,
4x=-2
now divide both sides by 4,
x=-2/4
simplify that,
x=-1/2
now your answer
y=4
x=-1/2