Pengurangan Pecahan 1.3 per 4 - 2 per 8 2.1 per 2 - 2 per 10 3.5 per 6 - 3 per 8 4.4 per 5 - 2 per 3 5.7 per 8 - 3 per 10

A. 3/4 - 2/8 = 1/2
B. 1/2 - 2/10 = 3/10
C. 5/6 - 3/8 = 11/24
D. 4/5 - 2/3 = 2/15
E. 7/8 - 3/10 = 23/40

[tex]1. \: \: \frac{3}{4} - \frac{2}{8} \\ = \frac{6}{8} - \frac{2}{8} \\ = \frac{4}{8} \\ = \frac{1}{2} \\ \\ 2. \: \: \frac{1}{2} - \frac{2}{10} = \frac{5}{10} - \frac{2}{10} = \frac{3}{10} \\ \\ 3. \: \: \frac{5}{6} - \frac{3}{8} = \frac{40}{48} - \frac{18}{48} = \frac{22}{48} = \frac{11}{24} \\ \\ 4. \: \: \frac{4}{5} - \frac{2}{3} = \frac{12}{15} - \frac{10}{15} = \frac{2}{15} \\ \\ 5. \: \: \frac{7}{8} - \frac{3}{10} = \frac{70}{80} - \frac{24}{80} = \frac{46}{80} = \frac{23}{40} [/tex]