Question

3/5 + 2/3 - (3/30 + 1 1/16) =
16/17 : 8 - 2/17 =
1 5/14 × 7/38 + 3/4 =
1 1/7 : 32/35 × 4/5 + 5/6 + 2/3 - 1/2 =
2 1/2 × (11/15 - 3/5) + (6/7 + 11/14) =

Помогите Очень СрОчНо!!!!!!
Даю 30 баллов !

Answer 1

Привет :)

$\frac{3}{5} + \frac{2}{3} - ( \frac{3}{30} + \frac{11}{16} ) = \frac{3}{5} + \frac{2}{3} - \frac{63}{80} = \frac{23}{48} \\ \frac{16}{17} \div 8 - \frac{2}{17} = \frac{16}{17} \times \frac{1}{8} - \frac{2}{17} = \frac{2}{17} - \frac{2}{17} = 0 \\ 1 \frac{5}{14} \times \frac{7}{38} + \frac{3}{4} = \frac{19}{14} \times \frac{7}{38} + \frac{3}{4} = \frac{1}{2 } \times \frac{1}{2} + \frac{3}{4} = \frac{1}{4} + \frac{3}{4} = 1 \\ 1 \frac{1}{7} \div \frac{32}{35} \times \frac{4}{5} + \frac{5}{6} + \frac{2}{3} - \frac{1}{2} = \frac{8}{7} \times \frac{35}{32} \times \frac{4}{5} + \frac{5}{6} + \frac{2}{3} - \frac{1}{2} = 1 + \frac{5}{6} + \frac{2}{3} - \frac{1}{2} = 2 \\ 2 \frac{1}{2} \times ( \frac{11}{15} - \frac{3}{5} ) + ( \frac{6}{7} + \frac{11}{14} ) = \frac{5}{2} \times \frac{2}{15} + \frac{23}{14} = \frac{1}{3} + \frac{23}{14} = \frac{83}{42}$