Sagot :

NulEnEspagnol

Réponse:

1.

3x + 4 =0

3x = -4

x =-4/3

2.

-2x + 7 = 0

-2x = -7

x =-7/2

3.

4+5x = 0

5x = -4

x =-4/-5

4. 2x = 0

X =-2

5.

-9x-5 = 0

-9x = 5

x = 5/-9