Question

Запишите дробь 2/7 в виде дроби со знаменателем:14,21,35,42,63,70,84,77,98.

Answer 1

$\tt\displaystyle \frac{2}{7}=\frac{2*2}{7*2} =\frac{4}{14}\\\\\\ \frac{2}{7}=\frac{2*3}{7*3} =\frac{6}{21}\\\\\\ \frac{2}{7}=\frac{2*5}{7*5} =\frac{10}{35}\\\\\\ \frac{2}{7}=\frac{2*6}{7*6} =\frac{12}{42}\\\\\\ \frac{2}{7}=\frac{2*9}{7*9} =\frac{18}{63}\\\\\\ \frac{2}{7}=\frac{2*10}{7*10} =\frac{20}{70}\\\\\\ \frac{2}{7}=\frac{2*12}{7*12} =\frac{24}{84}\\\\\\ \frac{2}{7}=\frac{2*11}{7*11} =\frac{22}{77}\\\\\\ \frac{2}{7}=\frac{2*14}{7*14} =\frac{28}{98}$