Respuesta :

[tex]\begin{gathered} 4\cdot\frac{5}{7}+3\cdot\frac{3}{4} \\ 7+\frac{5}{7}+\frac{3}{4} \\ 7+\frac{20+21}{28} \\ 7+\frac{41}{28} \\ 7+1\cdot\frac{13}{28} \\ 8\cdot\frac{13}{28} \end{gathered}[/tex]

The answer would be 8 13/28