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Aureliap
@Aureliap
May 2019
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Bonjour je suis en 4eme et je n'arrive pas à faire mon exercice de mon devoir maison de maths merci d'avance d'avoir pris le temps de me répondre
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nguyenso9
Verified answer
Bonjour,
1) 12/5 x 15/4 = 180/20 = 9
2) 6 x 3 = 18
3) 42/5 x 5/7 + 5/7 x 21
= 210/35 + 25/35 x 21/1
= 210/35 + 525/35
= 735/35
= 21
4) 3/4 x 8/21 x 13/6 x 35/3 x 9/5
= 98 280/7 560
= 13
5) 5/2 + 3/16 x 24
= 5/2 + 72/16
= 40/16 + 72/16
= 112/16
= 7
6) (2/3 + 4/9) x 216/10
= (6/9 + 4/9) x 216/10
= 10/9 x 216/10
= 2 160/90
= 24
7) 14/3 x 21/2 - 169/13 x 2 + 3
= 294/6 - 338/13 + 3/1
= 3 822/78 - 2 028/78 + 234/78
= 1 794/78+ 234/78
= 2 028/78
= 26
8) 11/4 + 1/3
= 33/12 + 4/12
= 37/12
Le denominateur est 12
Recap :
1) 9 ← R
2) 18 ← I
3) 21 ← F
4) 13 ← N
5) 7 ← T
6) 24 ← C
7) 26 ← A
8) 12 ← O
Apres plusieurs essais, j'ai trouvé le mot FRACTION
N'hesite pas a poser des questions si tu ne comprends pas
Bonne journee !
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Verified answer
Bonjour,1) 12/5 x 15/4 = 180/20 = 9
2) 6 x 3 = 18
3) 42/5 x 5/7 + 5/7 x 21
= 210/35 + 25/35 x 21/1
= 210/35 + 525/35
= 735/35
= 21
4) 3/4 x 8/21 x 13/6 x 35/3 x 9/5
= 98 280/7 560
= 13
5) 5/2 + 3/16 x 24
= 5/2 + 72/16
= 40/16 + 72/16
= 112/16
= 7
6) (2/3 + 4/9) x 216/10
= (6/9 + 4/9) x 216/10
= 10/9 x 216/10
= 2 160/90
= 24
7) 14/3 x 21/2 - 169/13 x 2 + 3
= 294/6 - 338/13 + 3/1
= 3 822/78 - 2 028/78 + 234/78
= 1 794/78+ 234/78
= 2 028/78
= 26
8) 11/4 + 1/3
= 33/12 + 4/12
= 37/12
Le denominateur est 12
Recap :
1) 9 ← R
2) 18 ← I
3) 21 ← F
4) 13 ← N
5) 7 ← T
6) 24 ← C
7) 26 ← A
8) 12 ← O
Apres plusieurs essais, j'ai trouvé le mot FRACTION
N'hesite pas a poser des questions si tu ne comprends pas
Bonne journee !