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

Solve for x & y and find the value of 9x+3y : 2x+5y=13 7x-y=27

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

Solve the system of equations: 2x+3y=13, 5x-y=7

By Matrix inverse method, solve 3x+4y+5z = 18, 2x-y+8z=13, 5x-2y+7z = 20 .

Solve the following system of equations by using Cramer,s ruel . 3x+4y+5z=18,2x-y+8z=13,5x-2y+7z=20

Solve the equations 3x+4y+5z=18,2x-y+8z=13,5x-2y+7z=20 by Gauss-Jordan method.

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

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

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 _____