1.2/5+2/3
2.2/6+3/8
3.4 1/7+3 3/14
4.3 2/9+2 1/12
5.4 3/8+7 316
6.3/4-2/6
7.3/4-3/10
8.3 3/9-1 3/18
9.4 2/6-1 1/9
10.9 2/12-4 3/24
[tex]1. \: \: \frac{2}{5} + \frac{2}{3} = \frac{6 + 15}{15} = \frac{21}{15} = \frac{7}{5} = 1\frac{2}{5} [/tex]
[tex]2. \: \: \frac{2}{6} + \frac{3}{8} = \frac{1}{3} + \frac{3}{8} = \frac{8 + 9}{24} = \frac{17}{24} [/tex]
[tex]3. \: \: 4 \frac{1}{7} + 3 \frac{3}{14} = \frac{29}{7} + \frac{45}{14} = \frac{58 + 45}{14} = \frac{103}{14} = 7 \frac{5}{14} [/tex]
[tex]4. \: \: 3 \frac{2}{9} + 2 \frac{1}{12} = \frac{29}{9} + \frac{25}{12} = \frac{116 + 75}{36} = \frac{191}{36} = 5 \frac{11}{36} [/tex]
[tex]5. \: \: 4 \frac{3}{8} + 7 \frac{3}{16} = \frac{35}{8} + \frac{115}{16} = \frac{70 + 115}{16} = \frac{185}{16} = 11 \frac{9}{16} [/tex]
[tex]6. \: \: \frac{3}{4} - \frac{2}{6} = \frac{3}{4} - \frac{1}{3} = \frac{9 - 4}{12} = \frac{5}{12} [/tex]
[tex]7. \: \: \frac{3}{4} - \frac{3}{10} = \frac{15 - 6}{20} = \frac{9}{20} [/tex]
[tex]8. \: \: 3 \frac{3}{9} - 1 \frac{3}{18} = 3 \frac{1}{3} - 1 \frac{1}{6} = \frac{10}{3} - \frac{7}{6} = \frac{20 - 7}{6} = \frac{13}{6} = 2 \frac{1}{6} [/tex]
[tex]9. \: \: 4 \frac{2}{6} - 1 \frac{1}{9} = 4 \frac{1}{3} - 1 \frac{1}{9} = \frac{13}{3} - \frac{10}{9} = \frac{39 - 10}{9} = \frac{29}{9} = 3 \frac{2}{9} [/tex]
[tex]10. \: \: 9 \frac{2}{12} - 4\frac{3}{24} = 9 \frac{1}{6} - 4 \frac{1}{8} = \frac{55}{6} - \frac{33}{8} = \frac{220 -99 }{24} = \frac{121}{24} = 5 \frac{1}{24} [/tex]
