bonjour
2x + 3 ≤ 9
2x ≤ 9-3
x ≤ 6/2
x ≤ 3
- 7x - 1 ≤ 3
-7x ≤ 3+1
-7 x ≤ 4
x ≥ -4/7
bonne soirée
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bonjour
2x + 3 ≤ 9
2x ≤ 9-3
x ≤ 6/2
x ≤ 3
- 7x - 1 ≤ 3
-7x ≤ 3+1
-7 x ≤ 4
x ≥ -4/7
bonne soirée