Réponses

2013-12-07T19:40:47+01:00
A=2X +4-(8x-9)
A=2x+4-8x+9
A=-6x+13

B=3a-7+(2a+5)+(3a-10)
B=3a-7+2a+5+3a-10
B=8a-12

C=3t+0,1-(4,5-6t)+[12-(3,2+T)]
C=3t+0,1-4,5+6t+12-3,2-t
C=8t+4,4