bjr
J = 5x3/12x3 + 19/36
J = 15/36 + 19/36
J = 34/36
soit J = 17/18
dénominateur commun 36
car 3x12 = 36
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bjr
J = 5x3/12x3 + 19/36
J = 15/36 + 19/36
J = 34/36
soit J = 17/18
dénominateur commun 36
car 3x12 = 36