Question

Прошуу!!!Вычислите:а)15/16×4/5.б)4/15:8/9в)7/10×30г)2,1/10я:1,2/5

Answer 1

$frac{15}{16} times frac{4}{5} = frac{3}{4} \ frac{4}{15} div frac{8}{9} = frac{4}{15} times frac{9}{8} = frac{1}{5} times frac{3}{2} = frac{3}{10} \ frac{7}{10} times 30 = 7 times 3 = 21 \ 2 frac{1}{10} div 1 frac{2}{5} = frac{21}{10} times frac{5}{7} = frac{3}{2} = 1 frac {1}{2}$

Answer 2

7/15х=21/5

Answer 3

х=21/5×15/7

Answer 4

х=9

Answer 5

Спасибо Большое

Answer 6

)))