Réponse :
Explications étape par étape
Bonsoir
x - 1 < 5 - 5x
x + 5x < 5 + 1
6x < 6
x < 6/6
x < 1
4x + 3 x - 2
-x + 40 > 10 + x
40 - 10 > x + x
30 > 2x
x < 30/2
x < 15
-6x + 11 4x
Exercice 22 :
2(x + 5) > (x + 3) - (x - 1)
2x + 10 > x + 3 - x + 1
2x > 4 - 10
x > -6/2
x > -3
4 - (2x - 1) 3(4x + 1)
5 - 2(x + 3) 2(x + 1) - 3(x - 2)
3/14 x - 1 < 5/7
3/14 x < 5/7 + 7/7
3/14 x < 12/7
x < 12/7 * 14/3
x < 12/3 * 14/7
x < 4 * 2
x < 8
1/4 - x > -5/12
1/4 + 5/12 > x
3/12 + 5/12 > x
8/12 > x
2/3 > x
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Réponse :
Explications étape par étape
Bonsoir
x - 1 < 5 - 5x
x + 5x < 5 + 1
6x < 6
x < 6/6
x < 1
4x + 3 x - 2
-x + 40 > 10 + x
40 - 10 > x + x
30 > 2x
x < 30/2
x < 15
-6x + 11 4x
Exercice 22 :
2(x + 5) > (x + 3) - (x - 1)
2x + 10 > x + 3 - x + 1
2x > 4 - 10
x > -6/2
x > -3
4 - (2x - 1) 3(4x + 1)
5 - 2(x + 3) 2(x + 1) - 3(x - 2)
3/14 x - 1 < 5/7
3/14 x < 5/7 + 7/7
3/14 x < 12/7
x < 12/7 * 14/3
x < 12/3 * 14/7
x < 4 * 2
x < 8
1/4 - x > -5/12
1/4 + 5/12 > x
3/12 + 5/12 > x
8/12 > x
2/3 > x