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Sagot :

Bonjour,

M=

21/24 -2/24 = 19/24

N=

-16/36  + 15/36 = -1/36

P =

-21/18 -30/18 +4/18 = -47/18

Q=

(20/15 +2/15) -( 12/16 -2/16)=

22/15 - 10/16 =

22/15 -5/4 =

88/60 - 75/ 60=  11/60

M= 19/24
N= -1/36
P=-47/18
Q=11/60

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