Question 273079
2x+y=5
1x-2y=4
.
4x+2y=10 multiply each side by 2
x-2y=4
--------add
5x=14
x=14/5
.
14/5 -2y = 4 
14-10y=20 multiply each side by 5
-10y=6
y=-6/10=-3/5
.
Ed