Question

Выполните сложение: 2)9 21/25+(30 4/15+18 64/75)

Answer 1

Ответ:

=9 63/75+30 20/75+18 64/75=57 147/75=58 72/75=58 24/25

Answer 2

Ответ:

2)9 21/25+(30 4/15+18 64/75)

$9\frac{21}{25}+(30\frac{4}{15}+18\frac{64}{75})= 9\frac{21}{25}+((30+18)+(\frac{4}{15}+\frac{64}{75}))=9\frac{21}{25}+(48+\frac{20+64}{75}) =\\\\=9\frac{21}{25}+(48+\frac{84}{75}) =9\frac{21}{25}+(48+\frac{28}{25}) =9\frac{21}{25}+(48+1\frac{3}{25}) =9\frac{21}{25}+(48+1+\frac{3}{25}) =\\\\=9\frac{21}{25}+49\frac{3}{25}=(9+49)+(\frac{21}{25}+\frac{3}{25})=58+\frac{24}{25} =58\frac{24}{25} =58,96$