" 21."2x-3y=12,x+3y=6

2x+3y=12;x-y=1

6x-4y=-12,8x-3y=-2

x+2y=-1,2x-3y=12

(3) x+2y=-1;2x-3y=12

(6) 2x-3y=4 ; 3y-x=4

Prove that the following lines are concurrent. (i)5x-3y=1 , 2x+3y=23 , 42x+21y=257 (ii) 2x+3y-4=0 , x-5y+7=0 , 6x-17y+24=0

Solution to 2x+3y=12,2y-1=x is……………

If x-3y=2 and x+y=6 , then the values of x and y will be