Question

ДАЮ 30 БАЛЛОВ ПОМОГИТЕ С МАТЕМАТИКОЙ ВСЕЙ ,ДАМ 30 БАЛЛОВ!

Answer 1

Ответ:

Задание 1.

$11 \frac{5}{6} - 5 \frac{3}{8} + 8 \frac{1}{12} = \frac{71}{6} - \frac{43}{8} + \frac{97}{12} = \frac{284 - 129 + 194}{24} = \frac{349}{24}$

Задание 2.

$x + 2 \frac{8}{15} = 3 \frac{7}{12} \\ x = 3 \frac{7}{12} - 2 \frac{8}{15} \\ x = \frac{43}{12} - \frac{38}{15} \\ x = \frac{215 - 152}{60} \\ x = \frac{63}{60} = \frac{21}{20}$

Задание 3.

$4 \frac{1}{3} - 1 \frac{4}{5} = \frac{13}{3} - \frac{9}{5} = \frac{65 - 27}{15} = \frac{38}{15}$

Задание 4.

$\frac{5}{8} = \frac{15}{24} \\ \frac{2}{3} = \frac{16}{24} \\ \frac{15}{24} < \frac{16}{24}$

Задание 5.

$5 - 2 \frac{8}{9} + \frac{4}{7} = 5 - \frac{26}{9} + \frac{4}{7} = \frac{315 - 182 + 36}{63} = \frac{169}{63}$