Question

Найдите значение выражений

Answer 1

16)
$frac{7}{20} - ( - 3.7) - frac{3}{25} = frac{7}{20} + 3.7 - frac{3}{25} = frac{7}{20} + frac{37}{10} - frac{3}{25} = frac{35}{100} + frac{370}{100} - frac{12}{100} = frac{393}{100} = 3.93$
17)
$frac{7}{20} - 5.05 - frac{7}{2} = frac{7}{20} - frac{505}{100} - frac{7}{2} = frac{7}{20} - frac{101}{20} - frac{7}{2} = frac{7}{20} - frac{101}{20} - frac{70}{20} = - frac{164}{20} = - frac{82}{10} = - 8.2$
18)
$frac{7}{4} - 2.3 - frac{3}{20} = frac{7}{4} - frac{23}{10} - frac{3}{20} = frac{35}{20} - frac{46}{20} - frac{3}{20} = - frac{14}{20} = - frac{7}{10} = - 0.7$
19)
$( - frac{2}{5} ) - 3.04 - frac{4}{25} = - frac{2}{5} - 3 frac{1}{25} - frac{4}{25} = - frac{10}{25} - frac{76}{25} - frac{4}{25} = - frac{90}{25} = - frac{18}{5} = - frac{36}{10} = - 3.6$