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Kinsou
@Kinsou
May 2019
2
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salut besoin d'aide svp
calculer les expression suivant ,et simplifier si c est possible
A=23 sur 18 - ( 1+2sur9)
B=12×(5sur8 -1sur4)
C=3sur2 × 4 sur 7- 9 sur 7 × 1 sur2
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meemameema
Verified answer
A=23 /18 - ( 1+2/9)
A = 23/18 - (9/9 + 2/9)
A = 23/18 - 11/9 on met sur même dénominateur 18 :
11/9 = 22/18
A = 23/18 - 22/18
A = 1/18
B=12×(5/8 -1/4)
B= 12 x (5/8 - 2/8)
B= 12 x (3/8)
B=36/8 on simplifie par 4 car 36 = 9 x 4
B= 9/2
8 = 2 x 4
C=3/2 × 4/7- 9/7 × 1/2
C= 3x4/2x7 - 9x1/7x2
C= 12/14 - 9/14
C= 3/14
3 votes
Thanks 1
Blaise64
C est faux le A est ce qu on demande de mettre sur meme denominateur ?? il faut juste simplifier
Blaise64
rien d autre
Blaise64
non jme suis trompe c est juste
kinsou
merci ☺
meemameema
de rien bonne soirée!!
Blaise64
Apres calcule j ai trouve A=17/18 le reste trop la flemme
0 votes
Thanks 0
Blaise64
A= 1/18
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Verified answer
A=23 /18 - ( 1+2/9)A = 23/18 - (9/9 + 2/9)
A = 23/18 - 11/9 on met sur même dénominateur 18 : 11/9 = 22/18
A = 23/18 - 22/18
A = 1/18
B=12×(5/8 -1/4)
B= 12 x (5/8 - 2/8)
B= 12 x (3/8)
B=36/8 on simplifie par 4 car 36 = 9 x 4
B= 9/2 8 = 2 x 4
C=3/2 × 4/7- 9/7 × 1/2
C= 3x4/2x7 - 9x1/7x2
C= 12/14 - 9/14
C= 3/14