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Cdy
@Cdy
April 2019
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URGENT, merci de bien vouloir m'aider sur ce devoir de maths que je dois rendre demain
Je dois effectuer ses calculs, mais le résultat doit être une fraction qu'on ne peut plus simplifier
A =
12
3
+ 12 sur 7 + 3 sur 7
7 7
B =
8
+
4
8 sur 7 + 4 sur 21
7 21
C =
39
-
28
39 sur 26 - 28 sur 26
26 26
D =
12
X
28
12 sur 35 X 28 sur 15
35 15
MERCI D'AVANCE
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linouchette
Bonjour
a=12/7+3/7=15/7
b=8/7+4/21=8×3/7×3 +4/21=24/21+4/21
b=28/21
c=39/26-28/26=(39-28)/26=11/26
d=12/35×28/15=(12÷3)/35×28/(15÷3)= 9/35×28/12=9/35×7/3=3/5
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a=12/7+3/7=15/7
b=8/7+4/21=8×3/7×3 +4/21=24/21+4/21
b=28/21
c=39/26-28/26=(39-28)/26=11/26
d=12/35×28/15=(12÷3)/35×28/(15÷3)= 9/35×28/12=9/35×7/3=3/5