Bài 2: Trang 177 - sách giáo khoa (SGK) toán tiếng Anh lớp...

{
content1: "a) \( \frac{2}{5} + \frac{3}{10} - \frac{1}{2} \)",
content2: "b) \( \frac{8}{11} + \frac{8}{33} \times \frac{3}{4} \)",
content3: "c) \( \frac{7}{9} \times \frac{3}{14} : \frac{5}{8} \)",
content4: "d) \( \frac{5}{12} - \frac{7}{32} : \frac{21}{16} \)",
content5: "a) \( \frac{2}{5} + \frac{3}{10} - \frac{1}{2} = \frac{4}{10} + \frac{3}{10} - \frac{5}{10} = \frac{7}{10} - \frac{5}{10} = \frac{2}{10} = \frac{1}{5} \)",
content6: "b) \( \frac{8}{11} + \frac{8}{33} \times \frac{3}{4} = \frac{8}{11} + \frac{8}{33} \times \frac{3}{4} = \frac{8}{11} + \frac{8}{11} = \frac{16}{11} \)",
content7: "c) \( \frac{7}{9} \times \frac{3}{14} : \frac{5}{8} = \frac{7}{9} \times \frac{3}{14} \div \frac{5}{8} = \frac{7}{9} \times \frac{3}{14} \times \frac{8}{5} = \frac{24}{45} = \frac{8}{15} \)",
content8: "d) \( \frac{5}{12} - \frac{7}{32} : \frac{21}{16} = \frac{5}{12} - \frac{7}{32} \div \frac{21}{16} = \frac{5}{12} - \frac{7}{32} \times \frac{16}{21} = \frac{5}{12} - \frac{112}{672} = \frac{5}{12} - \frac{1}{6} = \frac{25}{60} - \frac{10}{60} = \frac{15}{60} = \frac{1}{4} \)"
}