Найдите значение выражения : 15 - 7 3/5 + 0 + 2 7/8 8 5/12 + 5/6 - 5 3/4 - 2 1/2 (7 4/9 - 2 3/10) + (1 7/9 + 4 2/9 - 5 1/2)

15 - 7 [latex] \frac{3}{5} [/latex] + 0 + 2 [latex] \frac{7}{8} [/latex] = 7 [latex] \frac{2}{5} [/latex] + 2 [latex] \frac{7}{8} [/latex] = 7 [latex] \frac{16}{40} [/latex] + 2 [latex] \frac{35}{40} [/latex] = 10 [latex] \frac{11}{40} [/latex]   8 [latex] \frac{5}{12} [/latex] + [latex] \frac{5}{6} [/latex] - 5 [latex] \frac{3}{4} [/latex] - 2 [latex] \frac{1}{2} [/latex] = 8 [latex] \frac{5}{12} [/latex] + [latex] \frac{10}{12} [/latex] - 5 [latex] \frac{9}{12} [/latex] - 2 [latex] \frac{6}{12} [/latex] = 8 [latex] \frac{15}{12} [/latex] - 5 [latex] \frac{9}{12} [/latex] - 2 [latex] \frac{6}{12} [/latex] = 3 [latex] \frac{6}{12} [/latex] - 2 [latex] \frac{6}{12} [/latex] = 1 (7 [latex] \frac{4}{9} [/latex] - 2 [latex] \frac{3}{10} [/latex]) + (1 [latex] \frac{7}{9} [/latex] + 4 [latex] \frac{2}{9} [/latex] - 5 [latex] \frac{1}{2} [/latex]) = (7 [latex] \frac{40}{90} [/latex] - 2 [latex] \frac{27}{90} [/latex]) + (1 [latex] \frac{14}{18} [/latex] + 4 [latex] \frac{4}{18} [/latex] - 5 [latex] \frac{9}{18} [/latex]) = 5 [latex] \frac{13}{90} [/latex] + (6 - 5 [latex] \frac{9}{18} [/latex]) = 5 [latex] \frac{13}{90} [/latex] + [latex] \frac{9}{18} [/latex] = 5 [latex] \frac{13}{90} [/latex] + [latex] \frac{45}{90} [/latex] = 5 [latex] \frac{58}{90} [/latex] = 5 [latex] \frac{29}{45} [/latex]