Question

приведите дробь две седьмых к знаменателю14,21,35,140

 

Answer 1

$frac{2}{7} = frac{2*2}{7*2} = frac{4}{14} \ \ frac{2}{7} = frac{2*3}{7*3} = frac{6}{21} \ \ frac{2}{7} = frac{2*5}{7*5} = frac{10}{35} \ \ frac{2}{7} = frac{2*20}{7*20} = frac{40}{140}$