Question

кто сможет решить? срочно ​

Answer 1

Ответ:

$11 \frac{23}{24}$

Пошаговое объяснение:

1)

$8 \frac{3}{4} \div 1 \frac{1}{4} = \frac{35}{4} \div \frac{5}{4} = \frac{35}{4} \times \frac{4}{5} = 7$

$2)8 \frac{3}{4} \times \frac{4}{15} = \frac{35}{4} \times \frac{4}{15} = \frac{7}{3} = 2\frac{1}{3}$

$3)8 \frac{3}{4} \div 3 \frac{1}{3} = \frac{35}{4} \div \frac{10}{3} = \frac{35}{4} \times \frac{3}{10} = \frac{7 \times 3}{4 \times 2} = \frac{21}{8} = 2 \frac{5}{8}$

$a + b + c = 7 + 2 \frac{1}{3} + 2 \frac{5}{8} = 7 + \frac{7}{3} + \frac{21}{8} = \frac{7 \times 24}{24} + \frac{7 \times 8}{24} + \frac{21 \times 3}{24} = \frac{287}{24} = 11 \frac{23}{24}$