Réponses

2013-12-04T14:40:02+01:00
A)
[(7*5)+(2,1*5)+0,5] :-5*3
[(35+10,5)+0,5] :-15
(45,5+0,5) : -15
50 : -15=10/3

b)
(7*9)-33/(6*4)-16
63-33/24-16
30/8=15/4