Y = 3x – 6 2y + x = 6

3x-y=6 ×2
X+2y=6 ×1

6x-2y=12
X+2y=6
________+
7x =18
X=18/7 y= 8/78

Y = 3x – 6
= -3x

x = 2y + 6
= 8y