Réponse:
a=5/7×5/3=25/21
b=8×7=56
c=11/3×2/-5=22/-15
d=-7/2÷4/9=-7/2×9/4=-63/8
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Réponse:
a=5/7×5/3=25/21
b=8×7=56
c=11/3×2/-5=22/-15
d=-7/2÷4/9=-7/2×9/4=-63/8