Question

СРОЧНО! ПРОШУ ДАЮ 55 БАЛЛОВ! 6 класс №1 (5,6), №8 (3)

Answer 1

1.

5) Ответ: 0,5

$\frac{ - 2 \frac{2}{11} \times 4.125 + 1.6 \times 3\frac{3}{4} }{9 - 5 \frac{5}{6} \times 2 \frac{4}{7} } = \frac{ - \frac{24}{11} \times \frac{4125}{1000} + \frac{16}{10} \times \frac{15}{4} }{9 - \frac{35}{6} \times \frac{18}{7} } = \frac{ \frac{2250}{250} + \frac{12}{2} }{9 - 15 } = \frac{9 - 6}{9 -15} = \frac{3}{ - 6} = - 0.5$

6) Ответ: 9/140

$\frac{ - 2\frac{ 7}{24} \div 1 \frac{5}{6} - 1.6 \times ( - 0.5) }{ - 9.5 \div (5 \frac{7}{10} - 4 \frac{12}{35}) } = \frac{ - \frac{55}{24} \div \frac{11}{6} + 0.8}{ - \frac{95}{10} \div ( \frac{57}{10} - \frac{152}{35}) } = \frac{ - \frac{55}{24} \times \frac{6}{11} + \frac{8}{10} }{ - \frac{95}{10} \div \frac{399 - 304}{70} } = \frac{ - \frac{5}{4} + \frac{8}{10} }{ - \frac{95}{10} \div \frac{95}{70} } = \frac{ \frac{ - 25 + 16}{20} }{ - \frac{95}{10} \times \frac{70}{95} } = \frac{ - \frac{9}{20} }{ - 7} = - \frac{9}{20} \times ( - \frac{1}{7} ) = \frac{9}{140}$

8.

3) Ответ: -3,7m+3,8

$- 1.8(3.5m - 5) - 6.5(0.8 - 0.4m) = - 6.3m + 9 - 5.2 + 2.6m = - 3.7m + 3.8$