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Houriia2
@Houriia2
June 2021
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bonjour svp ex 64 et 67
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maudmarine
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64)
a) 2/3 (- 7/5) - 9/10
= - 6/15 - 9/10
= - 6 x 2 / 15 x 2 - 9 x 3 / 10 x 3
= - 12/30 - 27/30
= - 39/30
= 3 x - 13 / 3 x 10
= - 13/10
b) 7/15 - 1/15 x 10/7
= 7/15 - 10/105
= 7 x 7 / 15 x 7 - 10/105
= 49/15 - 10/105
= 39/105
= 3 x 13 / 3 x 35
= 13/35
67) ?
1 votes
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Bonsoir , qlq pourrais a faire un exercice svp ( fiche jointe)
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Bonsoir, qlq pourrais m'aide svp il faut faire une recherche sur Guy Mauppassant svp merci d'avance :)
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Verified answer
64)a) 2/3 (- 7/5) - 9/10
= - 6/15 - 9/10
= - 6 x 2 / 15 x 2 - 9 x 3 / 10 x 3
= - 12/30 - 27/30
= - 39/30
= 3 x - 13 / 3 x 10
= - 13/10
b) 7/15 - 1/15 x 10/7
= 7/15 - 10/105
= 7 x 7 / 15 x 7 - 10/105
= 49/15 - 10/105
= 39/105
= 3 x 13 / 3 x 35
= 13/35
67) ?