a)
[tex]3 \frac{7}{8} - \frac{1}{4} = \frac{31}{8} - \frac{2}{8} = \frac{29}{8} = 3 \frac{5}{8} [/tex]
b)
[tex]6 \frac{9}{16} - \frac{1}{2} = \frac{105}{16} - \frac{8}{16} = \frac{97}{16} = 6 \frac{1}{16} [/tex]
c)
[tex]3 \frac{7}{10} - 1 \frac{2}{5} = \frac{37}{10} - \frac{14}{10} = \frac{23}{10} = 2\frac{3}{10} [/tex]
d)
[tex]3 \frac{7}{15} - 1 \frac{1}{6} = \frac{52}{15} - \frac{7}{6} = \frac{104}{30} - \frac{35}{30} = \frac{69}{30} = 2 \frac{9}{30} = 2 \frac{3}{10} [/tex]
