TOLONG BANTU JAWAB NOMOR 11&12, JUSEYOO~!

11.
[tex]10 \frac{5}{6} - 2 \frac{2}{3} - \frac{20}{8} \\ = 10 \frac{5}{6} - 2 \frac{2}{3} - 2 \frac{1}{2} \\ = (10 - 2 - 2) + ( \frac{5}{6} - \frac{2}{3} - \frac{1}{2} ) \\ = 6 + ( \frac{10}{12} - \frac{8}{12} - \frac{6}{12} ) \\ = 6 + ( \frac{2}{12} - \frac{6}{12} ) \\ = 5 + ( \frac{14}{12} - \frac{6}{12} ) \\ = 5 \frac{8}{12} \\ = 5 \frac{2}{3} [/tex]
12.
[tex]4 \frac{3}{6} \div \frac{15}{12} \times 125\% \\ = \frac{27}{6} \div \frac{15}{12} \times \frac{125}{100} \\ = \frac{27}{6} \times \frac{12}{15} \times \frac{5}{4} \\ = \frac{9}{2} \times \frac{4}{5} \times \frac{5}{4} \\ = \frac{180}{40} \\ = \frac{9}{2} = 4 \frac{1}{2} [/tex]
maaf kalau salah dan kutang teliti :)
semoga membantu :]