GIẢI
Có: \(\frac{x}{2}\)= \(\frac{y}{3}\)= \(\frac{z}{4}\)= \(\frac{x+z}{2+4}\)= \(\frac{28}{6}\)= \(\frac{14}{3}\)
=> x = 28/3; y = 14; z = 56/4
\(\frac{x-5}{3}=\frac{y-4}{4}=\frac{z-3}{5}vax+y+z=36\)
tim x, y ,z, biet
giup mk
mk tk
mk dg gap
\(\frac{x}{2}=\frac{y}{3}=\frac{z}{4}vax^2-y^2+2z^2=108\)
\(\frac{x}{4}=\frac{y}{3}=\frac{z}{9}vax-3y+4z=62\)
\(\frac{x-1}{2}=\frac{y-2}{3}=\frac{z-3}{4}vax-2y+3z=14\)
de bai la tim x, y, z biet
giup mk
mk tk
mk dag voi
tim x,y,z khi
\(\frac{x}{7}=\frac{y}{3}va\)x-24=y
\(\frac{x}{5}=\frac{y}{7}=\frac{z}{2}\)va y-x=48
\(\frac{x}{2}=\frac{y}{3};\frac{y}{4}=\frac{z}{5}\)va x-y- z=28
\(\frac{x}{3}=\frac{y}{5}=\frac{z}{7}\)va 2x+3-z=-14
\(\vec{\frac{X}{2}=\frac{Y}{3};\frac{Y}{4}=\frac{Z}{5}X-Y-Z=28}\)
\(\frac{x}{2}=\frac{y}{3};\frac{y}{4}=\frac{z}{5}\)và x-y-z=28
\(\frac{x}{2}=\frac{y}{3};\frac{y}{4}=\frac{z}{5}\) và x-y-z=28
Giúp với
\(\frac{x}{2}=\frac{y}{3};\frac{y}{4}=\frac{z}{5}vàx-y-z=28\)
