Respuesta:
[tex] \frac{3}{2} + \frac{2}{3} - \frac{1}{4 } = \frac{6(3) + 4(2) - 3(1)}{12} = \frac{18 + 8 - 3}{12} = \frac{23}{12} = 1 \frac{11}{12} [/tex]
