Question

Чему равна сумма чисел 3/4 и 1/7?

Answer 1

3/4+1/7=21/28+4/28=25/28

Answer 2

$\tt\displaystyle\frac{3}{4}+\frac{1}{7}=\frac{3*7}{4*7}+\frac{1*4}{7*4}=\frac{21}{28}+\frac{4}{28}=\frac{25}{28}$