Помогите решить два примера П и Р

п) [latex]2 \frac{5}{8} - 3 \frac{5}{6} = \frac{21}{8} - \frac{23}{6} = \frac{3*21-4*23}{24} = \frac{63-92}{24} = - \frac{29}{24} [/latex] = - [latex]1 \frac{5}{24} [/latex] р)[latex]- 1 \frac{3}{4} + 2\frac{7}{8} = - \frac{7}{4} + \frac{23}{8} = \frac{(-7)*2+23}{8} = \frac{-14+23}{8} = \frac{9}{8} = 1 \frac{1}{8} [/latex]