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Sagot :

Bonjour,

exercice 1

A= -12/8 = -3/2

B= 10/3  +1/3 = 11/3

C= 11/6 -10/6 = 1/6

D= 23/3 -(18/60  + 110/60)=

23/3 - 128/60=

460/60 -128/60 = 332/60 = 166/30= 83/15

exercice 2

M= 2x+2 +3x-3 +2x +2=

7x +1

N=

-5a -10 -2 +2a -a -4=

-3a -16

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