Question

answer this plz of grade 8th i, ii and iii

Answer 1

$(1). \\ = > - \frac{1}{2} \times \frac{3}{5} + \frac{3}{2} - \frac{3}{5} \times \frac{5}{4} \\ = > - \frac{3}{10} + \frac{3}{2} - \frac{3}{4} \\ = > \frac{ - 6 + 30 - 15}{20} \\ = > \frac{ - 21 + 30}{20} \\ = > \frac{9}{20} \\ (2). \\ = > \frac{4}{7} \times ( - \frac{1}{5} ) + \frac{2}{7} \times \frac{3}{5} - \frac{3}{2} \times \frac{4}{7} \\ = > - \frac{4}{35} + \frac{6}{35} - \frac{6}{7} \\ = > \frac{ - 4 + 6 - 6}{35} \\ = > - \frac{4}{35} \\ (3). \\ = > \frac{1}{5} ( - \frac{3}{2} ) + \frac{4}{5 } \times ( - \frac{2}{7} ) \times - \frac{1}{6} \times ( - \frac{2}{7} ) \\ = > - \frac{3}{10} - \frac{8}{35} + \frac{1}{21} \\ = > \frac{ - 63 - 48 + 10}{210} \\ = > \frac{ - 111 + 10}{210} \\ = > - \frac{101}{210}$