Question

помогите пожалуйста срочно умоляю ​

Answer 1

$\frac{15}{28} - \frac{5}{28} = \frac{15 - 5}{28} = \frac{10}{28} = \frac{5}{14}$

$7 \frac{8}{9} - 6 \frac{2}{9} = 1 \frac{6}{9} = \frac{15}{9}$

$\frac{3}{4} + \frac{1}{2} = \frac{3}{4} + \frac{2}{4} = \frac{3 + 2}{4} = \frac{5}{4}$

$\frac{6}{35} \times 3 = \frac{6 \times 3}{35} = \frac{18}{35}$

$5 \frac{8}{13} + 2 \frac{5}{13} = 7 \frac{13}{13} = 8$

$\frac{3}{4} \div 2 = \frac{3}{4} \div \frac{2}{1} = \frac{3}{4} \times \frac{1}{2} = \frac{3 \times 1}{4 \times 2} = \frac{3}{8}$

$\frac{10}{27} \div 5 = \frac{10}{27} \div \frac{5}{1} = \frac{10}{27} \times \frac{1}{5} = \frac{10 \times 1}{27 \times 5} = \frac{2}{27}$

$\frac{5}{7} - \frac{2}{7} = \frac{5 - 2}{7} = \frac{3}{7}$