Réponses

2014-09-21T20:38:54+02:00
A = 6 × 13 + 6 × 17
A =  6 × (13 + 102 )
A = 6 × 115
A = 690

B = 1,4 × 11 - 1,4 × 9
B = 15,4 - 12,6
B = 2,8

C = 24 × 16 + 36 × 16
C = 384 + 576
C = 960