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Sagot :

Bonsoir,

a)

7x ≥ 8+9

7x ≥ 17

x≥ 17/7

c)

18x -15x ≥-7 -42

3x ≥-49

x ≥ -49/3

b)

15x-14x > 9+12

x > 21

d)

6+3 < -4x +7x

9< 3x

x> 9/3

x> 3

Réponse:

a) x>= 17/7

b) x > 21

c) x >= -49/3

d) x>3

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