Bonjour,
a.
1x+33=1x
→ Vous avez du vous tromper; l'équation n'admet aucune solution.
b.
36x+43 = 12x
43 = -24x
24x = -43
x = -43/24
c.
12x-31=9x
-31 = -3x
3x = 31
x = 31/3
d.
17x-10 = -3x
-10 = -20x
20x = 10
x = 10/20
x = 1/2 = 0,5
e.
29x-12 = -4x
-12 = -33x
33x = 12
x = 12/33
x = 4/11
f.
17x -25 = 2x
-25 = -15x
15x = 25
x = 25/15
x = 5/3
g.
-8x+25= x
25 = 9x
x = 25/9
h.
-46x -2 = 4x
-2 = 50x
-2/50 = x
x = -1/25= -0,04
i.
5x +49 = 6x
49 = x
x = 49
j.
-21 +3 = -7x
-18 = -7x
7x = 18
x = 18/7
Bonne journée.
