[tex] \frac{делимое}{делитель} = часное[/tex]

А)

[tex]8 \frac{2}{5} \div 1 \frac{1}{20} = \frac{42}{5} \times \frac{20}{21} = \frac{2}{1} \times \frac{4}{1} = 8[/tex]

Б)

[tex]4 \frac{5}{23} \div 1 \frac{3}{23} = \frac{97}{23} \times \frac{23}{26} = \frac{97}{26} [/tex]

В)

[tex]20 \frac{5}{8} \div 13 \frac{3}{4} = \frac{165}{8} \times \frac{4}{55} = \frac{3}{2} = 1.5[/tex]

Г)

[tex]12 \frac{2}{5} \div 3 \frac{1}{10} = \frac{62}{5} \times \frac{10}{31} = \frac{2}{1} \times \frac{2}{1} = 4[/tex]

Д)

[tex]8 \frac{6}{57} \div 12 \frac{3}{19} = \frac{462}{57} \times \frac{19}{231} = \frac{2}{3} [/tex]

Verified answer

а)

[tex]8 \frac{2}{5} \div 1\frac{1}{20} = \frac{42}{5} \div \frac{21}{20} = \frac{42}{5} \times \frac{20}{21} = 8[/tex]

б)

[tex]4 \frac{5}{23} \div 1 \frac{3}{23} = \frac{97}{23} \div \frac{26}{23} = \frac{97}{23} \times \frac{23}{26} = \frac{97}{26} = 3 \frac{19}{26} [/tex]

в)

[tex]20 \frac{5}{8} \div 13 \frac{3}{4} = \frac{165}{8} \div \frac{55}{4} = \frac{165}{8} \times \frac{4}{55} = \frac{3}{2} = 1.5[/tex]

г)

[tex]12 \frac{2}{5} \div 3 \frac{1}{10} = \frac{62}{5} \div \frac{31}{10} = \frac{62}{5} \times \frac{10}{31} = 4[/tex]

д)

[tex]8 \frac{6}{57} \div 12 \frac{3}{19} = \frac{462}{57} \div \frac{231}{19} = \frac{462}{57} \times \frac{19}{231} = \frac{2}{3} [/tex]