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linconnu7
@linconnu7
June 2021
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Bonsoir, pouvez vous m'aider pour l'exercice 1 s'il vous plaît..
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overjay
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Pour monter que a/b = c/d il suffit de montrer que a x d = c x b
(produit en croix)
18/5 ?=? 72/20
18 x 20 = 360
72 x 5 = 360
donc oui 18/5 = 72/20
2/3 ?=? 7/10,5
2 x 10.5 = 21
3 x 7 = 21
donc oui 2/3 = 7/10.5
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Verified answer
Pour monter que a/b = c/d il suffit de montrer que a x d = c x b(produit en croix)
18/5 ?=? 72/20
18 x 20 = 360
72 x 5 = 360
donc oui 18/5 = 72/20
2/3 ?=? 7/10,5
2 x 10.5 = 21
3 x 7 = 21
donc oui 2/3 = 7/10.5