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Sagot :

Bonjour,

1.

x - 7 > 2

x > 2 + 7

x > 9

2.

x + 9 < 4

x < 4 - 9

x < - 5

3.

x + 8 ≤  - 2x + 5

x + 2x ≤ 5 - 8

3x ≤ - 3

x ≤ - 1

4.

13 > 8 + x

x < 13 - 8

x < 5

5.

- 3x ≥ 7

x ≤ - 7/3

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