Explications étape par étape:
(-3) × (-1/3) = 1
5/11 × 11/5 =1
(-8/2) × 2/8 = -1
5/7 × (-7/5) = -1
(-7/4) × 4/7 = -1
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Explications étape par étape:
(-3) × (-1/3) = 1
5/11 × 11/5 =1
(-8/2) × 2/8 = -1
5/7 × (-7/5) = -1
(-7/4) × 4/7 = -1