Question

Найдите значение выражения

Answer 1

16)
$frac{5}{40} - 3.6 times frac{5}{9} = frac{1}{8} - frac{36}{10} times frac{5}{9} = frac{1}{8} - frac{4 times 1}{2 times 1} = frac{1}{8} - 2 = frac{1}{8} - frac{16}{8} = - frac{15}{8}$
17)
$frac{27}{10} - 1.8 times frac{2}{9} = frac{27}{10} - frac{18}{10} times frac{2}{9} = frac{27}{10} - frac{2 times 1}{5 times 1} = frac{27}{10} - frac{2}{5} = frac{27}{10} - frac{4}{10} = frac{23}{10} = 2.3$
18)
$3 frac{8}{15} - 0.2 times 2 frac{2}{3} = frac{53}{15} - frac{2}{10} times frac{8}{3} = frac{53}{15} - frac{1 times 8}{5 times3 } = frac{53}{15} - frac{8}{15} = frac{45}{15} = 3$
19)
$4 frac{6}{25} - 0.3 times 1 frac{3}{5} = frac{106}{25} - frac{3}{10} times frac{8}{5} = frac{106}{25} - frac{3 times 4}{5 times 5} = frac{106}{25} - frac{12}{25} = frac{94}{25} = 3 frac{19}{25}$