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MrCouscous
@MrCouscous
May 2019
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Bonjour, je n'arrive pas à faire ce devoir, pouvez-Vous m'aider svp, merci :
Résoudre les inéquations suivantes et représenter graphiquement leurs solutions
A. 5x + 9 < -3x - 7
B. -5x + 8 ≥ 11
C. 6 (-2x + 4) < 5x - (4x - 7)
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Commentaires (2)
Verified answer
A ) 5 x + 9 < - 3 x - 7
5 x + 3 x < - 7 - 9
8 x < - 16
x < - 16/8 = - 2
B ) - 5 x + 8 ≥ 11
- 5 x ≥ 11 - 8
- 5 x ≥ 3
x ≤ - 3/5 = - 0.6
C) 6 ( - 2 x + 4) < 5 x - ( 4 x - 7)
- 12 x + 24 < 5 x - 4 x + 7
- 12 x - 5 x + 4 x < 7 - 24
- 13 x < - 17
x > 17/13
2 votes
Thanks 1
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Verified answer
A ) 5 x + 9 < - 3 x - 75 x + 3 x < - 7 - 9
8 x < - 16
x < - 16/8 = - 2
B ) - 5 x + 8 ≥ 11
- 5 x ≥ 11 - 8
- 5 x ≥ 3
x ≤ - 3/5 = - 0.6
C) 6 ( - 2 x + 4) < 5 x - ( 4 x - 7)
- 12 x + 24 < 5 x - 4 x + 7
- 12 x - 5 x + 4 x < 7 - 24
- 13 x < - 17
x > 17/13