bonsoir aidez moi svp (8/5+7/5)×3/5 53/30-6/10+8/10 7/6×(7/2-3/2) 3/7+17/14-23/28
Mathématiques
ouedjdane0631
Question
bonsoir aidez moi svp
(8/5+7/5)×3/5
53/30-6/10+8/10
7/6×(7/2-3/2)
3/7+17/14-23/28
(8/5+7/5)×3/5
53/30-6/10+8/10
7/6×(7/2-3/2)
3/7+17/14-23/28
2 Réponse
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1. Réponse Anonyme
(8/5 + 7/5) x 3/5
= 15/5 x 3/5
= (3 x 5 x 3)/(5 x 5)
= 9/5
53/30 - 6/10 + 8/10
= 53/30 - 18/30 + 24/30
= 59/30
7/6 x (7/2 - 3/2)
= 7/6 x 4/2
= 7/6 x 2
= 14/6
= 7/3
3/7 + 17/14 - 23/28
= 12/28 + 34/28 - 23/28
= 23/28 -
2. Réponse aminerbt
A = (8/5 + 7/5) x 3/5
A = (8 + 7)/5 x 3/5
A = 15/5 x 3/5
A = (15 x 3)/(5 x 5)
A = 45/25
A = 9/5
B = 53/30 - 6/10 + 8/10
B = 53/30 - 18/30 + 24/30
B = (53 - 18 + 24)/30
B = (53 - 18 + 24)/30
B = 59/30
C = 7/6 x (7/2 - 3/2)
C = 7/6 x ((7 - 3)/2)
C = 7/6 x 4/2
C = 28/12
C = 7/3
D = 3/7 + 17/14 - 23/28
D = 12/28 + 34/28 - 23/28
D = (12 + 34 - 23)/28
D = (46 - 23)/28
D = 23/28