Réponses

2013-11-18T10:20:56+01:00
A = 6x13,9+3x13,9+13,9
   =(6+3)x13,9
   =10x13,9
   =139
B = 0,128x46+0,128x29-0,128x75
   =(46+29-75)x0,128
   = 0x0,128=0
13,9(6+3+1)=13,9x10=139
0,128x46+0,128x29-0,028x75=0,128(46+29)-0,028x75=0,128x75-0,028x75=
75(0,128-0,028)=75x0,1=7,5
Merci
2013-11-18T10:30:56+01:00
Bonjour
A = 6 x 13.9 + 3 x 13.9 + 13.9
A = 10 x 13.9 = 139

B=0.128 X 46+0.128 X 29 -0.028 X 75

B = 0,128 x 75  - 0,0028 x 75 = 9.6 - 0.96 = 8.64