Question

Математика даю 10 минут просто самостоят.

Answer 1

$1) \frac{2}{5} +\frac{3}{10} =\frac{4}{10} +\frac{3}{10} =\frac{7}{10}$

$2)\frac{1}{4} +\frac{3}{28} =\frac{7}{28} +\frac{3}{28} =\frac{10}{28} =\frac{5}{14}$

$3)\frac{7}{12} +\frac{1}{4} =\frac{7}{12} +\frac{3}{12} =\frac{10}{12} =\frac{5}{6}$

$4)\frac{2}{5} +\frac{3}{25} =\frac{10}{25} +\frac{3}{25} =\frac{13}{25}$

$5)\frac{2}{7}+\frac{5}{14} =\frac{4}{14} +\frac{5}{14} =\frac{9}{14}$

$6)\frac{5}{9} +\frac{1}{3} =\frac{5}{9} +\frac{3}{9} =\frac{8}{9}$

$7)\frac{4}{27} +\frac{2}{9} =\frac{4}{27} +\frac{6}{27} =\frac{10}{27}$

$8)\frac{1}{9} +\frac{5}{18} =\frac{2}{18} +\frac{5}{18} =\frac{7}{18}$