Question

3/4 + 5/7 + 3/5, utilizando el método de multiplicación cruzada

Answer 1

$\frac{3}{4} + \frac{5}{7} + \frac{3}{5} \\ \frac{21 + 20}{28} + \frac{3}{5} \\ \frac{41}{28} + \frac{3}{5} \\ \frac{205 + 84}{140} \\ \frac{289}{140}$