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

Simplify each of the following: 1. m-[m+{m+n-2m-(m-2n)}-n] 2. 3x^2z-4y z+3x y-{x^2z-(x^2z-3y z)-4y z-7z}

Simplify each of the following: m-[m+{m+n-2m-(m-2n)}-n] 3x^2z-4y z+3x y-{x^2z-(x^2z-3y z)-4y z-7z}

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?

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

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

Using matrices, solve the following system of equations for x,y and z. 2x+3y+3z=5 , x-2y+z=-4 , 3x-y-2z=3

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