[tex] ( \frac{1}{12} + \frac{1}{24} - \frac{1}{36} ) \div ( \frac{1}{4} + \frac{3}{5} ) \times 2 \frac{3}{7} \\ aducem \: la \: acelasi \: numitor \: comun \: parantezele (72)\\ si \: (20) \\ ( \frac{6 + 3 - 2}{72} ) \div ( \frac{5 + 12}{20} ) \times \frac{17}{7} = \\ \frac{7}{72} \div \frac{17}{20} \times \frac{17}{7} = \\ \frac{7}{72} \times \frac{20}{17} \times \frac{17}{7} \\ vom \: simplifica \: numaratorii \: cu \: numitorii \\ si \: va \: fi \: \frac{20}{72} \: simplificam \: prin \: 4 \\ \frac{5}{18} = 0.2(7)[/tex]
