Holaa!
A.
[tex]\frac{1}{2} + \frac{3}{4} \\ \\ \frac{2 + 3}{4} \\ \\ \\ \frac{5}{4} [/tex]
B.
[tex]\frac{1}{4} - \frac{1}{16} \\ \\ \\ \frac{4 + 1}{16} \\ \\ \\ \frac{3}{16} [/tex]
C.
[tex]\frac{4}{3} + \frac{4}{6} \\ \\ \frac{4}{3} + \frac{2}{3} \\ \\ \frac{4 - 2}{3} \\ \\ \frac{3}{6} \\ \\ \\2[/tex]
D.
[tex] \frac{5}{6} - \frac{2}{6} \\ \\ \frac{5 - 2}{6} \\ \\ \frac{3}{6} \\ \\ \frac{1}{2} [/tex]
E.
[tex]1 \frac{1}{2} + \frac{6}{4} \\ \\ \frac{3}{2} + \frac{5}{4} \\ \\ \frac{11}{2} [/tex]
F.
[tex] \frac{9}{12} - \frac{1}{4} \\ \\ \frac{3}{4} - \frac{1}{4} \\ \\ \frac{3 - 1}{4} \\ \\ \frac{2}{4} \\ \\ \frac{1}{2} [/tex]
¡¡Espero que te ayude!!
