Question

помогите!!!!!!!!!!!!!!! срочно

Answer 1

1) 2/3
2.280/80
3)27/5
4)95/161

Answer 2

1)
$frac{8}{27} times frac{9}{7} div frac{4}{7} = frac{8 times 9 times 7}{27 times 7 times 4} = frac{2}{3}$
3)
$2 frac{2}{3} div frac{24}{35} div 2 frac{7}{9} = frac{8 times 35 times 9}{3 times 24 times 25} = frac{7}{5} = 1.4$
5)
$frac{15}{16} div frac{5}{8} times 1 frac{1}{9} = frac{15 times 8 times 10}{16 times 5 times 9} = frac{5}{3} = 1 frac{2}{3}$
7)
$4 frac{9}{38} times frac{5}{23} div frac{7}{19} = frac{161 times 5 times 19}{38 times 23 times 7} = frac{5}{2} = 2.5$