C. 4(-x+1)-2(3x-5)= 0 D. 7(2x-6) - 4(5x-8) = -5x A Simplifier , Bonne chance !

bonsoir

- 4 x + 4 - 6 x + 10 =0
- 4x - 6 x = - 10 - 4
- 10 x  = - 14
x = 14/10 ou 7/5

14 - 42 - 20 x + 32 = - 5 x
- 20 x + 5 x = - 32 + 42 - 14
- 15 x = - 4
x = 4/15

Simplifier :

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

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