Réponses

2014-03-26T14:29:57+01:00
A = 4( 2x + 2 ) + 3 ( 2x + 6 )
A = 8x+8+6x+18
A=14x+26

B = (5x - 4 ) - ( -9x - 30 )
B = 5x -4+9x+30
B = 14x+26

Démontrer que A = B" 
A = 14x+26 et B = 14x+26 donc A = B