Explicación paso a paso:
[tex] \frac{1}{2} + \frac{1}{3} + \frac{3}{4} [/tex]
[tex] = \frac{(1 \times 3) + (2 \times 1)}{(2 \times 3)} + \frac{3}{4} [/tex]
[tex] = \frac{3 + 2}{6} + \frac{3}{4} [/tex]
[tex] = \frac{5}{6} + \frac{3}{4} [/tex]
[tex] = \frac{(5 \times 4) + (6 \times 3)}{(6 \times 4)} [/tex]
[tex] = \frac{20 + 18}{24} [/tex]
[tex] = \frac{38}{24} [/tex]
SIMPLIFICANDO
[tex] = \frac{19}{12} [/tex]
