á à iu oy đó ^^

p zt wá ik

thanks p pạn cx zậy nha ^^

\(\frac{x-1}{2}=\frac{2\left(x-1\right)}{2}=\frac{2x-2}{2}\)

\(\frac{y-2}{3}=\frac{3\left(y-2\right)}{3}=\frac{3y-6}{3}\)

\(\Rightarrow\frac{2x-2}{4}=\frac{3y-6}{9}=\frac{z-3}{4}=\frac{2x-2+3y-6-\left(z-3\right)}{4+9-4}\)

\(=\frac{2x+3y-z+3-2-6}{9}=\frac{50-5}{9}=\frac{45}{9}=5\)

=>x-1=5.2=10

=>x=11

y-2=5.3=15

=>y=17

z-3=5.4=20

=>z=23

vậy (x;y;z)=(11;17;23)