bonjour

3 x - 2 = - 8

3 x = - 8 + 2

3 x = - 6

x = - 2

4 - 5 x = 10

- 5 x = 10 - 4

- 5 x = 6

x = - 6/5

9 x = 0

x = 0

5 x + 8 = 7 x - 5

5 x - 7 x = - 5 - 8

- 2 x = - 13

x = 13/2

( - 4 x + 4 ) / 3 = - 12

( 4 x + 4 ) / 3 = - 36 /3

4 x + 4  = - 36

4 x = - 36 - 4

4 x = - 10

x = - 10

( x + 8 ) ( x - 7 ) = 0

un des facteurs  = 0

x = - 8 ou x = 7

Bonsoir,

x= -6/3

x= -2

4+10 = 5x

14 = 5x

x= 14/5

9x= 0

x= 0

8+5 = 7x -5x

13 = 2x

x= 13/2

-4x+4 = 12 *3

-4x+4 = 36

-4x = 36 -4

-4x = 32

x = -32/4 = -8

soit

x+8 =0

x= -8

soit

x=7 = 0

x= 7