6[latex] frac{8}{9} [/latex] + 2[latex] frac{1}{10} [/latex] 2[latex] frac{7}{9} [/latex] + 3[latex] frac{5}{6} [/latex] 2[latex] frac{9}{10} [/latex] + 3[latex] frac{7}{15} [/latex]  Pomocy !!!!!

[latex]6 frac{8}{9} + 2 frac{1}{10} = 6 frac{80}{90} + 2 frac{9}{90} = 8 frac{89}{90} [/latex] [latex]2 frac{7}{9} + 3 frac{5}{6} = 2 frac{14}{18} + 3 frac{15}{18} = 5 frac{29}{18} = 6 frac{11}{18} [/latex] [latex]2 frac{9}{10} + 3 frac{7}{15} = 2 frac{27}{30} + 3 frac{14}{30} = 5 frac{41}{30} = 6 frac{11}{30} [/latex]