Resoudre les équations a) x-5=3 b) 9x-9=6x c) 7x+2=4x-7 d) 4(x+1)=2x-3 e) 5x+1=(3x-1)+(x-7)
Mathématiques
bouffix62
Question
Resoudre les équations
a) x-5=3 b) 9x-9=6x c) 7x+2=4x-7
d) 4(x+1)=2x-3 e) 5x+1=(3x-1)+(x-7)
a) x-5=3 b) 9x-9=6x c) 7x+2=4x-7
d) 4(x+1)=2x-3 e) 5x+1=(3x-1)+(x-7)
2 Réponse
-
1. Réponse winner123
a ) x - 5 = 3
x = 3 + 5
x = 8
b) 9 x - 9 = 6 x
9 x - 6 x = 9
3 x = 9
x = 3
c) 7 x + 2 = 4 x - 7
7 x - 4 x = - 7 - 2
3 x = - 9
x = - 3
d) 4 x + 4 = 2 x - 3
4 x - 2 x = - 3 - 4
2 x = - 7
x = - 7/2
e) 5 x +1 = 3 x - 1 + x - 7
5 x - 3 x - x = - 1 - 7 - 1
x = - 9 -
2. Réponse Ibtissamm6
a ) x - 5 = 3 x = 3 + 5 x = 8
b) 9 x - 9 = 6 x 9 x - 6 x = 9 3 x = 9 x = 3
c) 7 x + 2 = 4 x - 7 7 x - 4 x = - 7 - 2 3 x = - 9 x = - 3
d) 4 x + 4 = 2 x - 3 4 x - 2 x = - 3 - 4 2 x = - 7 x = - 7/2
e) 5 x +1 = 3 x - 1 + x - 7 5 x - 3 x - x = - 1 - 7 - 1 x = - 9