7/12 - 5/12 =

1) $\frac{7}{12} - \frac{5}{12} = \frac{2}{12} = \frac{1}{6}$ 2) $1 - \frac{2}{5} = \frac{5}{5} - \frac{2}{5} = \frac{3}{5}$ 3) $1 - \frac{2}{45} = \frac{45}{45} - \frac{2}{45} = \frac{43}{45}$ 4) $12 - \frac{1}{7} = 11 + (1 - \frac{1}{7}) = 11 \frac{6}{7} = \frac{83}{7}$ 5) $21 - \frac{4}{13} = 20 + (1 - \frac{4}{13}) = 20 \frac{9}{13} = \frac{269}{13}$ 6) $12 - \frac{41}{70} = 11 + (1 - \frac{41}{70}) = 11 \frac{29}{70} = \frac{799}{70}$ 7) $36 - \frac{7}{53} = 35 + (1 - \frac{7}{53}) = 35 \frac{46}{53} = \frac{1901}{53}$ 8) $8 \frac{3}{4} - 4 = 4 \frac{3}{4} = \frac{19}{4}$ 9) $7 \frac{3}{5} - \frac{3}{5} = 7$ 10) $8 \frac{4}{6} - \frac{5}{6} = 8 \frac{4}{6} - \frac{5}{6} = 7 \frac{10}{6} - \frac{5}{6} = 7 \frac{5}{6} = \frac{47}{6}$ 11) $9 \frac{4}{9} - \frac{1}{3} = 9 \frac{4}{9} - \frac{3}{9} = 9 \frac{1}{9} = \frac{82}{9}$ 12) $8 \frac{3}{16} - \frac{1}{8} = 8 \frac{3}{16} - \frac{2}{16} = 8 \frac{1}{16} = \frac{129}{16}$ 13) $10 \frac{5}{8} - \frac{1}{4} = 10 \frac{5}{8} - \frac{2}{8} = 10 \frac{3}{8} = \frac{83}{8}$ 14) $11 \frac{7}{12} - \frac{1}{4} = 11 \frac{7}{12} - \frac{3}{12} = 11 \frac{4}{12} = 11 \frac{1}{3} = \frac{34}{3}$ 15) $7 \frac{41}{48} - \frac{5}{6} = 7 \frac{41}{48} - \frac{40}{48} = 7 \frac{1}{48} = \frac{337}{48}$