Solve :
`2x-y=7`
`3x-2y=11` by
Matrix inversion method.

Solve : 3x+2y=5 7x-y=6 , using matrix inversion method.

Solve x + y = 7 and 3x - 2y = 11.

Solve x + y = 7 and 3x - 2y = 11.

Solve x+y+z =9, 2x+5y+7z = 52 and 2x+y-z = 0 by using matrix inversion method.

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

Solve the following system of equations by matrix inversion method. {{:(x + 2y + z = 7 ),(" "x + 3z = 11),(" "2 x - 3y = 1 ):}