s'il vous plait c'est urgent a) 5x = 3x + 3 b) 8x = -12x + 4 c) 4 - 7y = 10y d) 2 + 3x = 7 - x e) 5 + 6x = -x - 9 f) 11x + 3 = 8x + 7 on peut m'aider s'il vous

Bonjour

a) 5x = 3x + 3
5x - 3x = 3
2x = 3
x = 3/2

b) 8x = -12x + 4
8x + 12x = 4
20x = 4
x = 4/20
x = 1/5
x = 0,2

c) 4 - 7y = 10y
-7y - 10y = -4
-17y = -4
y = -4/(-17)
y = 4/17

d) 2 + 3x = 7 - x
3x + x = 7 - 2
4x = 5
x = 5/4
x = 1,25

e) 5 + 6x = -x - 9
6x + x = -9 - 5
7x = -14
x = -14/7
x = -2

f) 11x + 3 = 8x + 7 
11x - 8x = 7 - 3
3x = 4
x = 4/3