Question

Заполните один пропуск!

Answer 1

$frac{1}{6} - frac{1}{9} = frac{3}{18} - frac{2}{18} = frac{1}{18}$

Answer 2

$frac{2}{15}cdot frac{5}{6}=frac{2cdot 5}{(5cdot 3)cdot (2cdot 3)}=frac{1}{9}\\frac{1}{9}+x=y\\y-frac{1}{16}=z\\z:1frac{1}{4}=frac{1}{12}; ; to ; ; z=frac{1}{12}cdot frac{5}{4}=frac{5}{48}; ; Rightarrow \\y-frac{1}{16}=frac{5}{48}; ; to ; ; y=frac{5}{48}+frac{1}{16}=frac{5+3}{48}=frac{8}{48}=frac{1}{6}; ; Rightarrow \\frac{1}{9}+x=frac{1}{6}; ; to ; ; x=frac{1}{6}-frac{1}{9}=frac{3-2}{18}=frac{1}{18}$