Bonsoir,
1.
4 - 5 (3x + 2) = -x + 5
⇔ 4 - 15x - 10 + x - 5 = 0
⇔ -11 - 14x = 0
⇔ x = -11/14
2.
5x = 7 + 3(2x+1)
⇔ 5x = 7 + 6x + 3
⇔ 6x - 5x = -10
⇔ x = -10
3.
4 (-2x - 6) + 3x = 8
⇔ -8x - 24 + 3x = 8
⇔ 5x = -32
⇔ x = -32/5
4.
2 (x-5) = 3 (4x+2)
⇔ 2x - 10 = 12x + 6
⇔ 10x = -16
⇔ x = -16/10 = -8/5
5.
6 (2x -4) - 3 (6x+7) = 5
⇔ 12x - 24 -18x - 21 = 5
⇔ 6x = -50
⇔ x = 25/3
6.
4 (3x-6) = 5 + 2 (7x+3)
⇔ 12x - 24 = 5 + 14x + 6
⇔ 2x = -35
⇔ x = -35/2