2x-3y=17,4x+y=13

2x-3y=9,2x+y=13

" (3) "2x-3y=9;2x+y=13

2x-3y=13; 7x-2y=20

Solve for x,y: 2x+3y=13,5x-y=7

2x+3y+z=17,x-y+z=3,3x+2y-2z=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

x-y=3 2x+3y+4z=17 y+2z=7

Find the value of (x+y) and (x-y) , if (i) 15x-17y=11 , 17x-15y=21 . (ii) 12x+13y=29 , 13x+12y=21 .

The lines x+2y-5=0, 2x-3y+4=0,6x+4y-13=0