Question

виконайте обчислення: а) 3/8:12/17 б) 1 4/9:1 1/26 в) 2 2/3 : 2 1/4 г) 5/8:40 ​

Answer 1

Ответ:

$a) \frac{3}{8} \div \frac{12}{17} = \frac{1}{4 } \times \frac{17}{12 } = \frac{17}{48} \\ b)1 \frac{4}{9} \div 1 \frac{1}{26} = \frac{13}{9} \div \frac{27}{26} = \frac{13}{9} \times \frac{26}{27} = \frac{338}{243} \\ d)2 \frac{2}{3} \div 2 \frac{1}{4} = \frac{8}{3} \div \frac{9}{4} = \frac{8}{3} \times \frac{4}{9} = \frac{32}{27} \\ c) \frac{5}{8} \div 40 = \frac{5}{8} \times \frac{1}{40 } = \frac{1}{8} \times \frac{1}{8} = \frac{1}{64}$