44 et 45 svp urgent c'est pour dans 1 heures

Exercice 44 :

a) 
5(3 - 2x) = - (4x + 1)
15 - 10x = - 4x - 1
15 + 1 = - 4x + 10x
16 = 6x
16/6 = x
8/3 = x

b)
- 2(3 + x) + 2x = 6(x + 2)
- 6 - 2x + 2x = 6x + 12
- 6 = 6x + 12
- 6 - 12 = 6x
- 18 = 6x
- 18/6 = x
- 3 = x

Exercice 45 :

a)
3 + 4(2x - 1) = 3(x + 5) - 2
3 + 8x - 4 = 3x + 15 - 2
8x - 1 = 3x + 13
8x - 3x = 13 + 1
5x = 14
x = 14/5

b)
- 3 - 7(2x + 2) = 4(- 1 - x)
- 3 - 14x - 14 = - 4 - 4x
- 17 - 14x = - 4 - 4x
- 17 + 4 = - 4x + 14x
- 13 = 10x
- 13/10 = x