`x+y+z=3`
`x+2y+3z=4`
`x+4y+9z=6`

Find the value of (( x -y )^3 + ( y - z )^3 + ( z - x )^3 )/ (9 ( x - y )( y - z ) ( z - x )) 1 . 0 2 . 1/9 3 . 1/3 4. 1

If P,Q and R are the values of x,y and z respectively, which satisfy the system of equations x+y+z =6,x+2y+3z=14 and x+4y+9z=36, then P+R-Q=

The following system of linear equations has x+ 2y + 3z=1,2x + y + 3z = 2, 5x+ 5y + 9z = 4

Show that each of the following systems of linear equations is consistent and also find their solutions: 6x+4y=2 9x+6y=3 2x+3y=5 6x+9y=15 5x+3y+7z=4 3x+26 y+2z=9 7x+2y+10 z=5 x-y+z=3 2x+y-z=2 -x-2y+2z=1 x+y+z=6 x+2y+3z=14 x+4y+7z=30 2x+2y-2z=1 4x+4y-z=2 6x+6y+2z=3

2x + 3y-5z = 7, x + y + z = 6,3x-4y + 2z = 1, then x =

Add: 5x - 8y + 2z, 3z - 4y - 2x, 6y - z - x and 3x - 2z - 3y

3x+4y+7z=4, 2x+y+ 3z= 3, x + 2y +3z =8.

Solve the following system of equations: x-y+z=4,\ \ \ \ x-2y-2z=9,\ \ \ \ 2x+y+3z=1