Sagot :
Réponse :
a) -3x + 6 = x + 9
-4x = 3
x = -3/4
b) x/2+ 1 = 6
x/2 + 2/2 = 12/2
x + 2 = 12
x = 10
c) 2x + 1/2= 1/3
12x/6 + 3/6 = 2/6
12x + 3 = 2
12x = -1
x = -1/12
d) 2x/3- 1 = 5
2x/3 - 3/3 = 15/3
2x - 3 =15
2x = 18
x = 9
Réponse :
Bonjour
Explications étape par étape
a) -3x+6 =x+9
6-9=x+3x
-3=4x
x= -3/4
b) x/2 + 1 = 6
x/2 =6-1
x=5*2=10
c) 2x+1/2= 1/3
2x=1/3 -1/2
2x= 2/6 - 3/6
2x= -1/6
x= -1/12
d) 2x/3 -1 =5
2x/3=6
2x=6*3
x=9
voila Bonne journée