1. 3/7+1/8= 2.1 1/6 +2 3/8= 3.5/6 +1/2 +1/3= 4.0,8 + 0.12 5.0,6 +0,102

1.
[tex] \frac{3}{7} + \frac{1}{8} = \frac{24}{56} + \frac{7}{56} = \frac{31}{56} [/tex]
2.
[tex] \frac{11}{6} + 2 \frac{3}{8} \\ = \frac{11}{6} + \frac{19}{8} = \frac{44}{24} + \frac{57}{24} = \frac{101}{24} \\ = 4 \frac{5}{24} [/tex]
3.
[tex] \frac{5}{6} + \frac{1}{2} + \frac{1}{3} = \frac{5}{6} + \frac{3}{6} + \frac{2}{6} = \frac{10}{6} \\ = 1 \frac{4}{6} = 1 \frac{2}{3} [/tex]
4.
[tex]0.8 = \frac{4}{5} \\ 0.12 = \frac{12}{100} = \frac{6}{50} = \frac{3}{25} \\ \frac{4}{5} + \frac{3}{25} = \frac{20}{25} + \frac{3}{25} = \frac{23}{25} [/tex]
5.
[tex]0.6 = \frac{3}{5 } \\ 0.102 = \frac{102}{1000} = \frac{51}{500} \\ \frac{3}{5} + \frac{51}{500} = \frac{300}{500} + \frac{51}{500} = \frac{351}{500}[/tex]