Bonsoir ?
A = [tex] \frac{3}{20} -\frac{5}{12} = \frac{36}{240}- \frac{100}{240}= -\frac{64}{240} = -\frac{4}{15} [/tex]
B = [tex] \frac{5}{11} -\frac{-9}{11} = \frac{5}{11} +\frac{9}{11} = \frac{14}{11} [/tex]
C = [tex] \frac{3}{4} - \frac{-4}{5} = \frac{15}{20} + \frac{16}{20} = \frac{31}{20} [/tex]
D = [tex]1- \frac{8}{7} = \frac{7}{7} -\frac{8}{7} = -\frac{1}{7} [/tex]
E = [tex]- \frac{3}{16} -\frac{5}{16} = -\frac{8}{16} = -\frac{1}{2} [/tex]
