How much less than x - 2y + 3z is 2x - 4y -z?

By how much is 2x - 3y + 4z greater than 2x + 5y - 6z + 2?

How much is x-2y+3z greater than 3x+5y-7?

How much is x-2y+3z greater than 3x+5y-7?

How much is x^2-2x y+3y^2 less than 2x^2-3y^2+x y ?

How much is x^2-2x y+3y^2 less than 2x^2-3y^2+x y ?

What should be added to x y+y z+z x to get x y-y z-z x ? -2x y-2y z-2z x (b) -3x y-y z-z x -3x y-3y z-3z x (d) 2x y+2y z+2z x

What should be added to x y+y z+z x to get x y-y z-z x ? (a) -2x y-2y z-2z x (b) -3x y-y z-z x (c) -3x y-3y z-3z x (d) 2x y+2y z+2z x

If X is 30% less than Y and Z is 50% less than Y, then Z is how much percentage less than Y?

By how much is 5x-3y+4z greater than 5x-2y+2z+5