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Sagot :

VINS

bonsoir

A = - 2 /15  - (  60/15 - 21/15 + 10/15)

   = - 2 /15 -  49/15

   = - 51/15  = 3.4

B  =  36/15 - 3 /2

   =  72/30 -  45/30

   =  27/360  = 0.9

C  =  4 /3 ( 18/10 - 15/10)

    =   4/3 * 3 /10

   = 12/30   =  0.4

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