" 12/ "5x-[4y-{7x-(3z-2y)+4z-3(x+3y-2z)}]

3x - [4y - {7x - (3z - 2y) + 4z - 3(x + 3y - 2z)}]

2x+3y+3z=5 x-2y+z=-4 3x-y-2z=3

x-y=3 2x+3y+4z=17 y+2z=7

Write down the terms of the expression: 8x^4y-7x^3y z+4/3x^2y z^2- 5 x y z . What is the coefficient of x^2 in the term 4/3x^2y z^2?

Add : 8x - 3y + 7z, -4x + 5y - 4z, -x - y - 2z

Solve the following system of equations: 2x-3y+5z=11, 5x+2y-7z=-12, -4x+3y+z=5

Solve system of linear equations , using matrix method if exists 5x+y-z=7 4x-2y-3z=5 7x+2y+2z=7

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

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