Bonsoir,
Calculer puis simplifier si nécessaire
[5/14 + (-2/7) ] x (-3/14 +1/14)
= [5/14 - (2 x 2) / (7 x 2)] x - 2/14
= (5/14 - 4/14) x - 2/14
= 1/14 x - 2/14
= - 2/196
= (2 x - 1) - (2 x 98)
= - 1/98.
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Bonsoir,
Calculer puis simplifier si nécessaire
[5/14 + (-2/7) ] x (-3/14 +1/14)
= [5/14 - (2 x 2) / (7 x 2)] x - 2/14
= (5/14 - 4/14) x - 2/14
= 1/14 x - 2/14
= - 2/196
= (2 x - 1) - (2 x 98)
= - 1/98.