Résoudre les équations suivantes...
a. 2x+1= -4
b.7+5x=4
c.4x-3= -7
d.-5+3x=1
a) 2x+1=-4 2x=-4-1 x=-5/2
b) 7+5x=4 5x=4-7 x=-3/5
c) 4x-3=-7 x=-10/4
d) -5+3x=1 x=6/3
a = 2x = -5
a = x = -5/2
b = 5x = -3
b = x = -3/5
c = 4x = -4
c = x = 1
d = 3x = 4
d = x = -4/3
