On donne B= [tex] \frac{2}{9} + \frac{5}{6} [/tex] ÷ [tex] \frac{5}{2} [/tex] Calculer B en simplifiant dès que possible.

[tex] \frac{2}{9} + \frac{ \frac{5}{6} }{ \frac{5}{2} } = \frac{2}{9} + \frac{5}{6} * \frac{2}{5} = \frac{2}{9} + \frac{10}{30} = \frac{10*2}{10*9} + \frac{3*10}{3*30} = \frac{20}{90} + \frac{30}{90} = \frac{50}{90} = \frac{5}{9} [/tex]