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dede94
@dede94
June 2021
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bon pouvez-vous m'aidez c'est urgent niveau
exercice 2
1) La somme des inverses de deux nombres est-elle égale a l'inverse de la somme de ces deux nombre ( justifiez)
2) La différence des inverses de deux nombres est-elle égale a l'inverse de la différence de ces deux nombres (justifiez)
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caylus
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Bonjour,
1: c'est faux, il suffit d'un contre-exemple.
1/2+1/3=?1/(2+3)
3/6+2/6=? 1/5
5/6=?1/5 non
2: c'est faux, il suffit d'un contre-exemple
1/3-1/4=? 1/(3-4)
4/12-3/12=? -1
1/12=? -1 non
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pouvez vous m'aidez svp
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Bonjour,1: c'est faux, il suffit d'un contre-exemple.
1/2+1/3=?1/(2+3)
3/6+2/6=? 1/5
5/6=?1/5 non
2: c'est faux, il suffit d'un contre-exemple
1/3-1/4=? 1/(3-4)
4/12-3/12=? -1
1/12=? -1 non