Respuesta:
[tex] \frac{1}{3} + \frac{1}{4} = \\ \\ \frac{(1 \times 4) + (3 \times 1)}{3 \times 4} = \\ \\ \frac{4 + 3}{12} = \\ \\ \frac{7}{12} [/tex]
En total se ha gastado 7/12 del sueldo y le quedarán
[tex] \frac{12}{12} - \frac{7}{12} = \\ \\ \frac{12 - 7}{12} = \\ \\ \frac{5}{12} [/tex]
Le quedarán 5/12
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Respuesta:
[tex] \frac{1}{3} + \frac{1}{4} = \\ \\ \frac{(1 \times 4) + (3 \times 1)}{3 \times 4} = \\ \\ \frac{4 + 3}{12} = \\ \\ \frac{7}{12} [/tex]
En total se ha gastado 7/12 del sueldo y le quedarán
[tex] \frac{12}{12} - \frac{7}{12} = \\ \\ \frac{12 - 7}{12} = \\ \\ \frac{5}{12} [/tex]
Le quedarán 5/12