" (2) "11x+15y=-23" & "7x-2y=20

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

Solve the following system of equations: 11x+15y+23=0,quad 7x-2y-20=0

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

If the solution of pair of linear equations 2x- 3y= 13 and 7x- 2y= 20 " is " x=2 and y= -3 , then the value of m for which y= mx+7 is _____

If the solution of pair of linear equation 2x - 3y = 13 and 7x - 2y = 20 is x = 2 and y = - 3, then find the value of m for which y = mx + 7.

Solve the system of equation :11x+15y+23=0,7x-2y-20=0

The equation of the bisectors between the lines 3x-4y+7=0 and 12+5y-2=0 is (A) 21x+77y-101=0 (B) 11x+3y+20=0 (C) 21x-7y+3=0 (D) 11x-3y+9=0

7x+15y =2 x-2y=3