7/15+3calosci i 8/15+5calosci i 11/15=...... 8calosci i 3/10+4calosci i 3/10+7/10=......

[latex] frac{7}{15} + 3 frac{8}{15} + 5 frac{11}{15} = 9 frac{11}{15} [/latex] [latex] 8frac{3}{10} + 4 frac{3}{10} + frac{7}{10} = 13 frac{3}{10} [/latex]