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 = 5, y + z = 7, z + x = 6, then the value of x, y and z are

If x , y, z in R, x + y + z= 4 and x^(2) + y^(2) + z^(2) = 6 , then the maximum possible value of z is

If [[x-y-z] , [-y+z] , [z]] = [[0], [5] , [3]] then find the values of x, y and z

If x /(y+z) = y/(z + x) = z /(x + y) , then find the value of each fraction.

If x, y and z are three non-zero numbers such that x + y le z -x, y + z le x -y and z + x le y -z , the maximum value of x + y + z is __________.

If x(x+y+z)=9, y(x+y+z)=16 and z(x+y+z)=144 then what is the value of x?