Question

помогите решить номер 19 1,2пример

Answer 1

2,1 - 62/10*(3/31) = 2,1 - (62/31)*(3/10) = 2,1 - 6/10 = 1,5 - ответ

Answer 2

а 1 пример

Answer 3

..??...

Answer 4

$frac{2}{47} times 9.4 + 5.6 = frac{2}{47} times frac{47}{5} + frac{28}{5} = 2 times frac{1}{5} + frac{28}{5} = frac{2}{5} + frac{28}{5} = 6 \ \ - - - - - - - - - \ \ 2.1 - 6.2 times frac{3}{31} = frac{21}{10} - frac{31}{5} times frac{3}{31} = frac{21}{10} - frac{1}{5} times 3 = frac{21}{10} - frac{3}{5} = 1.5$