\(\frac{x-3}{4}=\frac{y+4}{7}=\frac{z-5}{3}\) và 3x - 2y + 7z = -48
Tìm x:
\(\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}\)và x-2y+3z=14
Cho \(\frac{3x-2y}{4}=\frac{2z-4x}{3}=\frac{4y-3z}{2}\)
Cmr : \(\frac{x}{2}=\frac{y}{3}=\frac{z}{4}\)
Cho \(\frac{3x-2y}{4}=\frac{2z-4x}{3}=\frac{4y-3z}{2}\).Chứng minh rằng\(\frac{x}{2}=\frac{y}{3}=\frac{z}{4}\).
cho \(\frac{3x-2y}{4}=\frac{2z-4x}{3}=\frac{4y-3z}{2}\)CMR \(\frac{x}{2}=\frac{y}{3}=\frac{z}{4}\)
\(\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}vàx-2y+3z=14\)
Tìm x,y,z. Làm theo cách đặt k dùm em nhakk
m) \(\frac{x}{2}=\frac{2y}{5}=\frac{4z}{7}\)và 3x+5y+7z=123
n) \(\frac{2x}{3}=\frac{3y}{4}=\frac{4z}{5}\)và x+y+z=49
p) \(\frac{x}{2}=\frac{2y}{3}=\frac{3z}{4}\)và xyz= -108
r) \(\frac{x}{2}=\frac{y}{3}=\frac{z}{4}\)và xy+yz+zx=104
s) \(\frac{x}{2}=\frac{y}{5}=\frac{z}{4}\)và x2-xy+3yz=54
t) \(\frac{x}{5}=\frac{y}{7}=\frac{z}{3}\)và x2+y2-z2=585
u) \(\frac{x}{2}=\frac{y}{3}\frac{z}{4}\)và x3+y3+z3=792
Tìm x, y, z biết:
\(\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}vàx-2y+3z\)
Cho \(\frac{3x-2y}{4}=\frac{2x-4x}{3}=\frac{4y-3z}{2}\)
CMR: \(\frac{x}{2}=\frac{y}{3}=\frac{z}{4}\)