Résoudre chaque équation . Merci a) 3 ( x - 1 ) + 2 ( x + 3 ) = 0 b) - 5 ( x + 2 ) + 3 ( x - 3 ) = 7 c) 4 ( - x + 1 ) - 2 ( 3 x - 5 ) = 0 d) 7 ( 2 x - 6 ) -

a. 3 (x - 1) + 2 (x + 3) = 0
3x - 3 + 2x + 6 = 0
5x = - 6 + 3
5x = - 3
x = - 3/5
x = - 0,6

b. - 5 (x + 2) + 3 (x - 3) = 7
- 5x - 10 + 3x - 9 = 7
- 2x = 7 + 9 + 10
- 2x = 26
x = - 26/2
x = - 13

c. 4 (- x + 1) - 2 (3x - 5) = 0
- 4x + 4 - 6x + 10 = 0
- 10x = - 10 - 4
- 10x = - 14
x = - 14 / (- 10)
x = 1,4

d. 7 (2x - 6) - 4 (5x - 8) = - 5x
14x - 42 - 20x + 32 = - 5x
- 6x + 5x = - 32 + 42
- x = 10
x = - 10