Sagot :
bonjour
2 ( x - 4 ) = 7 x - 2
2 x - 8 = 7 x - 2
2 x - 7 x = - 2 + 8
- 5 x = 6
x = - 5 /6
- x /2 - 1 < x /5 + 1 /4
- 10 x /20 - 20 /20 < 4 x / 50 + 5 /20
- 10 x - 4 x < 5 + 20
- 14 x < 25
x > - 25/14
] - 25 /14 : + ∞ [
bonjour
2 ( x - 4 ) = 7 x - 2
2 x - 8 = 7 x - 2
2 x - 7 x = - 2 + 8
- 5 x = 6
x = - 5 /6
- x /2 - 1 < x /5 + 1 /4
- 10 x /20 - 20 /20 < 4 x / 50 + 5 /20
- 10 x - 4 x < 5 + 20
- 14 x < 25
x > - 25/14
] - 25 /14 : + ∞ [