Sagot :
Bonjour,
a) -5 x +7=6
7-6 = 5x
1 = 5x
x= 1/5
b)2x -2 =2x
2x-2x = 2
x= 1
c) (3x -1) - (x - 1)=3x -5
3x-1 -x +1 = 3x-5
2x = 3x-5
5 = 3x -2x
5= x
x=5
Bonjour,
a) -5 x +7=6
7-6 = 5x
1 = 5x
x= 1/5
b)2x -2 =2x
2x-2x = 2
x= 1
c) (3x -1) - (x - 1)=3x -5
3x-1 -x +1 = 3x-5
2x = 3x-5
5 = 3x -2x
5= x
x=5