Question

помогите . вычислите : а)3/14× 7; б) 2 1/7×1 2/5; в) 6/57×9/12; г) 3/7 ÷6; д) 1 7/9 ÷ 5 1/3; е) 6/25÷ 3/5;​
Срочно ! Даю 15 балл

Answer 1

Вроде правильно.

$\frac{6}{25} \div \frac{3}{5} = \frac{6}{25} \times \frac{5}{3} = \frac{2}{5}$

$\frac{3}{14} \times 7 = \frac{3 \times 7}{14} = \frac{3}{2 } = 1 \frac{1}{2}$

$2 \frac{1}{7} \times 1 \frac{2}{5} = \frac{15}{7} \times \frac{7}{5} = \frac{3}{1} = 3$

$\frac{6}{57} \times \frac{9}{12} = \frac{3}{38}$

$\frac{3}{7} \div 6 = \frac{3}{7} \div \frac{6}{1} = \frac{3}{7} \times \frac{1}{6} = \frac{1}{14}$

$1 \frac{7}{9} \div 5 \frac{1}{3} = \frac{16}{9} \div \frac{16}{3} = \frac{16}{9} \times \frac{3}{16} = \frac{1}{3}$