выполните сложение и представьте результат в виде смешанной дроби: 3/8+7/8; 5/12 +2/3; 3/4 + 4/5; 4/15 + 17/20; 15/12 + 11/18;

[tex] \frac{3}{8} + \frac{7}{8} = \frac{10}{8} = 1 \frac{2}{8} = 1 \frac{1}{4} [/tex]

[tex] \frac{5}{12} + \frac{2}{3} = \frac{5}{12} + \frac{8}{12} = \frac{13}{12} = 1 \frac{1}{12} [/tex]

[tex] \frac{3}{4} + \frac{4}{5} = \frac{15}{20} + \frac{16}{20} = \frac{31}{20} = 1 \frac{11}{20} [/tex]

[tex] \frac{4}{15} + \frac{17}{20} = \frac{16}{60} + \frac{51}{60} = \frac{67}{60} = 1 \frac{7}{60} [/tex]

[tex] \frac{15}{12} + \frac{11}{18} = \frac{45}{36} + \frac{22}{36} = \frac{67}{36} = 1 \frac{31}{36} [/tex]