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LAETITIASEHRINE
@LAETITIASEHRINE
April 2019
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A)calculer en détaillant toutes les étapes. b) donne le résultat sous la forme la plus simple possible A EGALE 7/5+2/3 FOIS 15/4 B égale 8/5-7/2:9/8 C égale (8/3-2/5):7/5 D égale 5/6+8/5 fois 3/4
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winner123
Verified answer
Bonsoir
A = 7/5 +2/3 x 15/4
A = 7/5 + 30/12
A = 35/60 + 360/60
A = 395/60
A = 79/12
B = 8/5 - 7/2 : 9/8
B = 8/5 - 7/2 x 8/9
b = 8/5 - 56/18
B = 144/90 - 280/90
B = - 136/90
B = - 68/45
C = ( 8/3 - 2/5) : 7/5
C = ( 40/15 - 6/15) x 5/7
C = 34/15 x 5/7 = 170/105
C = 34/21
D = 5/6 + 8/5 x 3/4
D = 5/6 + 24/20
D = 5/6 + 6/5
D = 25/30 + 36/30 = 61/30
2 votes
Thanks 1
winner123
oui il faut toujours simplifier
winner123
la A est simplifiée par 5
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Verified answer
BonsoirA = 7/5 +2/3 x 15/4
A = 7/5 + 30/12
A = 35/60 + 360/60
A = 395/60
A = 79/12
B = 8/5 - 7/2 : 9/8
B = 8/5 - 7/2 x 8/9
b = 8/5 - 56/18
B = 144/90 - 280/90
B = - 136/90
B = - 68/45
C = ( 8/3 - 2/5) : 7/5
C = ( 40/15 - 6/15) x 5/7
C = 34/15 x 5/7 = 170/105
C = 34/21
D = 5/6 + 8/5 x 3/4
D = 5/6 + 24/20
D = 5/6 + 6/5
D = 25/30 + 36/30 = 61/30