2x-y=5 2-y= 4x-1

2x-y=5 X-Y=5-2 x-y=3 2-y= 4x-1 2+1=4X+y 3=4x-y

2x-y=5 2-y= 4x-1 2x-y=5 -4x-y=-1-2 2x-y=5 -4x-y=-3 I * (-1) 2x-y=5 4x+y=3 6x=8 /:6 x=8/6 2x-y=5 x=8/6 2*8/6-y=5 x=8/6 8/3-y=5 x=8/6 -y=5- 8/3 x=8/6 -y=2 1/3 x=8/6 y=-2 1/3 x=8/6