bonjour
1 - 4 x ≥ 5
- 4 x ≥ 5 - 1
- 4 x ≥ 4
x ≤ - 1
] - ∞ ; - 1 ]
2 x + 5 ≤ 7 x - 1
2 x - 7 x ≤ - 1 - 5
- 5 x ≤ 6
x ≥ - 6/5
[ - 6./5 ; + ∞ [
( t + 3 ) / 2 < ( t + 1 ) / 3
( 3 t + 9 ) / 6 < ( 2 t + 2 ) / 6
3 t + 9 < 2 t + 2
3 t - 2 t < 2 - 9
t < - 7
] - ∞ ; - 7 [
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bonjour
1 - 4 x ≥ 5
- 4 x ≥ 5 - 1
- 4 x ≥ 4
x ≤ - 1
] - ∞ ; - 1 ]
2 x + 5 ≤ 7 x - 1
2 x - 7 x ≤ - 1 - 5
- 5 x ≤ 6
x ≥ - 6/5
[ - 6./5 ; + ∞ [
( t + 3 ) / 2 < ( t + 1 ) / 3
( 3 t + 9 ) / 6 < ( 2 t + 2 ) / 6
3 t + 9 < 2 t + 2
3 t - 2 t < 2 - 9
t < - 7
] - ∞ ; - 7 [