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Lyna1999
@Lyna1999
June 2021
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Calculer une fraction NIV 5eme ex 16 19 20 ❤️
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nonotata
Exercice 16
1/
25 = 5x5
10 = 5x2
2/
25/7 x3/10 = 5x5/7 x 3 /5x2 = 15/14
exercice 19
tu t aperçois qu'ils ont tous le meme denominateur donc il s agit de fraction simple et le calcul n est pas compliquer non plus
donc
89/5 +14/5 = 93/5
41/23-35/23 = 6/23
32/7-17/7 = 15/7
53/11+37/11 = 90/11
exercice 20
3/4+7/4 = 10/4 = 5x2 / 2x2 = 5/2
7/15-2/15 = 5/15 =5/5x3 = 1/3
25/12+11/12 = 36/12 = 12x3/12 = 3
51/8-17/8 = 34/8 = 17x2/ 2x4 = 17/4
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1/
25 = 5x5
10 = 5x2
2/
25/7 x3/10 = 5x5/7 x 3 /5x2 = 15/14
exercice 19
tu t aperçois qu'ils ont tous le meme denominateur donc il s agit de fraction simple et le calcul n est pas compliquer non plus
donc
89/5 +14/5 = 93/5
41/23-35/23 = 6/23
32/7-17/7 = 15/7
53/11+37/11 = 90/11
exercice 20
3/4+7/4 = 10/4 = 5x2 / 2x2 = 5/2
7/15-2/15 = 5/15 =5/5x3 = 1/3
25/12+11/12 = 36/12 = 12x3/12 = 3
51/8-17/8 = 34/8 = 17x2/ 2x4 = 17/4