Sagot :
bonjour
7 x = 49
x = 7
- 2 x = 8
x = - 4
5 x = - 30
x = - 6
- 4 x = - 36
x = 9
x/5 = 4
x = 20
- x / 11 = - 1
x = 11
x /7 = - 4
x = - 28
x / - 4 = 3
x = - 12
Réponse
Explications étape par étape
exemples:
7x = 49 -2x = 8 5x = -30
x = 49/7 x = 8/(-2) x = -30/5