at_answer_text_math
bonjour
2 x - 5 > 0
2 x > 5
x > 5/2
] 5/2 ; + ∞ [
6 x - 3 ≤ 6
6 x ≤ 6 + 3
6 x ≤ 9
x ≤ 3/2
] - ∞ ; 3/2 ]
18 < 3 x
- 3 x < - 18
x > 6
] 6 ; + ∞ [
- 4 x + 7 < 5 x + 2
- 4 x - 5 x < 2 - 7
- 9 x < - 5
x > 5/9
] 5/9 ; + ∞ [
at_explanation_text_math