[4.2x-3y,=13],[7x-2y,=20]

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 _____

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

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

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

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

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

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

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 following pair of linear equations by substitution method : 3x-y=3, 7x+2y=20 .