nomor 10;11;12 pkai cara

[tex]11. \: 4 \frac{1}{6} - 2 \frac{7}{15} \\ = \frac{25}{6} - \frac{37}{15} \\ = \frac{25}{30} - \frac{37}{30} \\ = \frac{125}{30} - \frac{74}{30} \\ = \frac{51}{30} = \frac{51 \div 3}{30 \div 3} \\ = \frac{17}{10} = 1 \frac{7}{10} \\ jawabannya \: a.[/tex]
[tex]12. \: 2 \frac{2}{7} \times \frac{5}{8} \\ = \frac{16}{7} \times \frac{5}{8 } \\ = \frac{16 \times 5}{7 \times 8} = \frac{80}{56} \\ = \frac{80 \div 8}{56 \div 8} = \frac{10}{7} \\ = 1 \frac{3}{7} \\ jawabannya \: d.[/tex]