Ecrit par schott anne le Septembre 17, 2000 at 17:54:52:
g a résoudre des équations et j'aimerais savoir si c juste
2-4(x-1)=2x
= 2 - 4 X x - 4 X 1 = 2x
= 2 - 4x - 4 = 2x
= 2 - 4 = 2x - 4x
= -2 =-2x |+2
V
= 0 = x
------------------
x+3(x-1)=x/2
= x + 3 X x - 3 X 1 = x/2
= x + 3x - 3 = x/2
= x + 3x + x/2 = -3 |X2
V
= 4x + x = -6
= 5x = -6 |-5
V
= x = -11