Explications étape par étape:
bonjour
[tex]\frac{7}{11} = \frac{7 \times 2}{11 \times 2} = \frac{14}{22} \\ \frac{12}{5} = \frac{6 \times 12}{6 \times 5} = \frac{72}{30} \\ \frac{9}{7} = \frac{9 \times 9}{9 \times 7} = \frac{81}{63} \\ \\ \\
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[tex] \frac{8}{9} = \frac{8 \times 4}{9 \times 4} = \frac{32}{36} \\ \frac{10}{11} = \frac{10 \times 7}{11 \times 7} = \frac{70}{77} \\ \frac{36}{42} = \frac{6 \times 6}{6 \times 7} = \frac{6}{7} [/tex]
[tex] \frac{15}{32} = \frac{2 \times 15}{2 \times 32} = \frac{30}{64} \\ \frac{54}{63} = \frac{9 \times 6}{9 \times 7} = \frac{6}{7} \\ \frac{33}{42} = \frac{3 \times 11}{3 \times 14} = \frac{11}{14} [/tex]
j'espère t'avoir aidé
