d)
[tex] \frac{2 \times 12 + 1}{12} - \frac{3}{8} - \frac{1 \times 16 + 5}{16} = \\ \frac{25}{12} - \frac{3}{8} - \frac{21}{16} = \frac{100 - 18 - 63}{48} = \frac{19}{48} [/tex]
e)
[tex] \frac{1 \times 10 + 9}{10} - \frac{1 \times 4 + 1}{4} - \frac{4}{15} = \\ \\ \frac{19}{10} - \frac{5}{4} - \frac{4}{15} = \\ \frac{114 - 75 - 16}{60} = \frac{23}{60} [/tex]
f)
[tex] \frac{3 \times 9 + 1}{9} - \frac{5}{8} - \frac{1 \times 24 + 5}{24} = \\ \frac{28}{9} - \frac{5}{8} - \frac{29}{24} = \\ \frac{224 - 45 - 87}{72} = \frac{92}{72} = \frac{23}{18} [/tex]
g)
[tex] \frac{3 \times 25 + 4}{25} - \frac{1 \times 15 + 6}{15} - \frac{3}{5} = \\ \frac{79}{25} - \frac{21}{15} - \frac{3}{5} = \\ \\ \frac{79}{25} - \frac{7}{5} - \frac{3}{5} = \\ \frac{79 - 35 - 15}{25} = \frac{29}{25} [/tex]
h)
[tex] \frac{4 \times 21 + 5}{21} - \frac{7}{12} - \frac{2 \times 4 + 3}{4} = \\ \frac{89}{21} - \frac{7}{12} - \frac{11}{4} = \\ \frac{356 - 49 - 231}{84} = \frac{76}{84} = \frac{19}{21} [/tex]
i)
[tex] \frac{3 \times 18 + 5}{18} - \frac{2 \times 15 + 7}{15} - \frac{1}{9} = \\ \frac{59}{18} - \frac{37}{15} - \frac{1}{9} = \frac{225 - 222 - 10}{90} = \\ \frac{63}{90} = \frac{7}{10} [/tex]
