и) 38:515 19 38 17 к) 46:191 36 6

и) $$3\frac{8}{19} : 5\frac{15}{38} = \frac{65}{19} : \frac{205}{38} = \frac{65}{19} \cdot \frac{38}{205} = \frac{65 \cdot 38}{19 \cdot 205} = \frac{2470}{3895} = \frac{2 \cdot 5 \cdot 13 \cdot 19}{5 \cdot 19 \cdot 41} = \frac{26}{41}$$

Ответ: $$\frac{26}{41}$$

к) $$4\frac{17}{36} : 19\frac{1}{6} = \frac{161}{36} : \frac{115}{6} = \frac{161}{36} \cdot \frac{6}{115} = \frac{161 \cdot 6}{36 \cdot 115} = \frac{966}{4140} = \frac{7 \cdot 23 \cdot 6}{6 \cdot 690} = \frac{161}{690}$$

Ответ: $$\frac{161}{690}$$