Explicație pas cu pas:
[tex] \frac{25}{12} + 1 \frac{2}{9} - \frac{7}{4} = \\ \frac{25}{12} + \frac{1 \times 9 + 2}{9} - \frac{7}{4} = \\ \frac{25}{12} + \frac{11}{9} - \frac{7}{4} = \\ \frac{3\times 25 + 4 \times 11 - 9 \times 7}{36} = \\ \frac{75 + 44 - 63}{36} = \\ \frac{56}{36} = \\ \frac{14}{9} [/tex]
