Question

Срочно даю 100 балов

Answer 1

$1.$

$1) \: \: \: \: \: \frac{9}{14} + \frac{5}{21} = \frac{27 + 10}{42} = \frac{37}{42}$

$2) \: \: \: \: \: \frac{16}{35} - \frac{5}{14} = \frac{32 - 25}{70} = \frac{7}{70} = 0.1$

$3) \: \: \: \: \: 8 \frac{7}{16} + 3 \frac{3}{10} = \frac{135}{16} + \frac{33}{10} = \frac{675 + 264}{80} = \frac{939}{80} = 11 \frac{59}{80}$

$6 \frac{11}{15} -2 \frac{7}{10} = \frac{101}{15} - \frac{27}{10} = \frac{202 - 81}{30} = \frac{121}{30} = 4 \frac{1}{30}$

$2.$

$(x - 9 \frac{3}{7} ) + 5 \frac{8}{21} = 6 \frac{5}{14} \\ (x - \frac{66}{7} ) + \frac{113}{21} = \frac{89}{14} \\ x - \frac{66}{7} = \frac{89}{14} - \frac{113}{21} \\ x - \frac{66}{7} = \frac{267 - 226}{42} \\ x - \frac{66}{7} = \frac{41}{42} \\ x = \frac{41}{42} + \frac{66}{7} \\ x = \frac{41 + 396}{42} \\ x = \frac{437}{42} = 10 \frac{17}{42}$

$3.$

$1) \: \: \: \: \: 0.5 - \frac{2}{7} = \frac{1}{2} - \frac{2}{7} = \frac{7 - 4}{14} = \frac{3}{14 \\ }$

$2) \: \: \: \: \: 0.53 + \frac{5}{16} = \frac{53}{100} + \frac{5}{16} = \frac{212 + 125}{400} = \frac{337}{400}$

Answer 2

Відповідь на завдання 1 2 та 3