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Sagot :

SKABETIX

Bonjour,

[tex] \frac{1}{7} + \frac{12}{7} - ( \frac{5}{7} + \frac{3}{7} ) - \frac{5}{7} [/tex]

[tex] = \frac{13}{7} - \frac{8}{7} - \frac{5}{7} [/tex]

[tex] = \frac{13}{7} - \frac{13}{7} [/tex]

[tex] = 0[/tex]

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