Question

математика 5 класс ​

Answer 1

Ответ:

Пошаговое объяснение:

a) $\frac{2}{15} +\frac{4}{15} =\frac{6}{15} =\frac{2}{5}$

$b)\frac{7}{20} +\frac{1}{20} =\frac{7+1}{20} =\frac{8}{20} =\frac{2}{5}$

$d) \frac{9}{16} +\frac{5}{16} =\frac{9+5}{16} =\frac{14}{16} =\frac{7}{8}$

$c) \frac{12}{100} +\frac{25}{100} =\frac{12+25}{100} =\frac{37}{100}$

2.

$a)\frac{4}{7} -\frac{2}{7} =\frac{4-2}{7} =\frac{2}{7}$

$b)\frac{5}{8} -\frac{4}{8} =\frac{5-4}{8} =\frac{1}{8}$

в)$\frac{15}{16} -\frac{4}{16} =\frac{15-4}{16} =\frac{11}{16}$

$г)\frac{99}{100} - \frac{81}{100} =\frac{99-81}{100} =\frac{18}{100} =\frac{9}{50}$