Tìm x,y,z biết
\(\frac{x}{2}=\frac{2y}{3}=\frac{3z}{4}\)và \(x.y.z=-108\)
1, Tim x,y,z
e, \(\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}\) va x - 2y + 3z =14
h,\(\frac{x}{2}=\frac{y}{3}\) va x . y = 54
Tìm x, y, z biết \(\frac{x}{2}\)=\(\frac{2y}{3}\)=\(\frac{3z}{4}\)và x.y.z= -108
Tim x,y,z biet:
\(\frac{5z-6y}{4}=\frac{6x-4z}{5}=\frac{4y-5x}{6}\) va 3x-2y+5z=96
tim x,y,z biet
a/ x:y:z = 5:3:4 va x+2y-z =-121
b/ 5x = 2y ; 3y = 5z va x+y+z = -970
c/ x/3 = y/12 = z/5 va x.y.z = 22,5
tim x,y,z trong cac truog hop sau
a)2x=3y=5z va |x+2y|=5
b)5x=2y;2x=3z va xy=90
c) \(\frac{y+z+1}{x}\)=\(\frac{x+z+2}{y}\)=\(\frac{x+y-3}{z}\)=\(\frac{1}{x+y+z}\)
tim x,y,z biết \(\frac{x}{2}=\frac{y}{3}=\frac{z}{5}\) va x.y.z =810
tim x,y,z biet:
\(\frac{x}{2}\)=\(\frac{y}{3}\); \(\frac{y}{2}\)=\(\frac{z}{5}\); va x+y-3z=2