Répondre :

[tex]A = \frac{5}{6} + \frac{10}{3} - \frac{3}{2} = \frac{5}{6} + \frac{20}{6} - \frac{3}{2} = \frac{25}{6} - \frac{9}{6} = \frac{16}{6} = \frac{8}{3} [/tex]

[tex]B = \frac{9}{7} : \frac{5}{8} = \frac{9}{7} * \frac{8}{5} = \frac{72}{35} [/tex]
a) 5/6 + 10/3 - 3/2
  5/6+20/6-9/6=16/6
b) 9/7 : 5/8
   9/7 x 8/5=72/35

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