Verified answer

bonjour

- 9 x  - 15 = - 19 - 7 x

- 9 x + 7 x = - 19 + 15

- 2 x = - 4

x =  -4/-2 = 2

Verified answer

Réponse :

coucou,

-9x -15 = -19 -7x

-9x +7x = -19 +15

-2x = -4

x = -4 / -2

x = 2