Question

2 3/8:3 1/6=9,1:а
СРОЧНО, В ТЕЧЕНИИ 45 МИНУТ Я ДОЛЖЕН СДАТЬ

Answer 1

Ответ:

$2 \frac{3}{8} \div 3 \frac{1}{6} = 9.1 \div a$

$2 \frac{3}{8} a = 9.1 \times 3 \frac{1}{6}$

$2 \frac{3}{8} a = 9 \frac{1}{10} \times 3 \frac{1}{6} = \frac{91}{10} \times \frac{19}{6} = \frac{1729}{60} = 28 \frac{49}{60}$

$a = 28 \frac{49}{60} \div 2 \frac{3}{8} \\ \\ a = \frac{1729}{60} \div \frac{19}{8} = \frac{1729}{60} \times \frac{8}{19} = \frac{91}{15} \times \frac{2}{1} = \frac{182}{15} = 12 \frac{2}{15}$