Réponses

2014-01-22T14:10:51+01:00
Salut :)

R = 4 (6+x) + 6
R = 24 + 4x +6
R = 4x + 30

S =
7 (4-b) + 2
S = 28 - 7b +2
S = - 7b + 30

T = ( 3+b ) * 7 - 4b - 15
T = 21 + 7b - 4b - 15
T = 3b + 6
2014-01-22T14:12:45+01:00
R= 36+4x+6
R=42+4x

S= 28-7b +2
S= 30-7b

T= 21+7b-4b-15
T= 6+3b