If `x:(y+z) = 4:5` and `y:x+z = 5:7` then find `x:y:z`

If 2x+3y=5, 2y+z=3, and x+5y+z=3 , then x =

If X = 5Y = 8Z, find X:Y:Z.

Let x ,y ,z in R such that x+y+z=6a nd x y+y z+z x=7. Then find the range of values of x ,y ,a n dzdot

If x+y+z=1,x y+y z+z x=-1 and x y z=-1, find the value of x^3+y^3+z^3dot

If x+y+z=1,\ x y+y z+z x=-1\ \ a n d\ x y z=-1, find the value of x^3+y^3+z^3

If x+y+z=8\ \ a n d\ \ \ x y+y z+z x=20 , find the value of x^3+y^3+z^3-3x y z

Write the values of x,y and z from the following equation: [[x+y+z],[ x+z],[ y+z]]=[[9], [5], [7]]

Verify the property: x\ "x"\ (y" x" z)=(x\ "x "y)"x"\ z\ b y\ taking:\ (i) x=7/3, y=(12)/5, z=4/9 (ii) x=0, y=(-3)/5, z=(-9)/4