Bonjour,
Réponse:
E =
[tex]\frac{7}{3} - \frac{5}{3} \times \frac{2}{3} = \frac{7}{3} - \frac{10}{9} = \frac{11}{9} [/tex]
F =
[tex] \frac{3}{2} \times (5 - \frac{6}{7} ) = \frac{3}{2} \times \frac{29}{7} = \frac{87}{14} [/tex]
[tex] \frac{ \frac{1}{3} + \frac{2}{3} }{ \frac{5}{7} } = \frac{1}{ \frac{5}{7} } = 1 \times \frac{7}{5} = \frac{7}{5} [/tex]
C =
[tex] \frac{ \frac{7}{ - 3} \times \frac{5}{7} }{ \frac{ - 6}{7} \times \frac{11}{ - 3} } = \frac{ \frac{35}{ - 21} }{ \frac{ - 66}{ - 21} } = \frac{35}{ - 21} \times \frac{21}{66} = \frac{ - 35}{66} [/tex]
