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Sagot :

VINS

bonjour,

1)

x

x + 6

5 ( x + 6)

5 x + 30

2)

x

- 3 x

- 3 x + 68

5 x + 30 ≥ - 3 x + 68

5 x +3 x ≥ 68 - 30

8 x ≥ 98

x ≥  12.25

[ 12.25 : + ∞ [

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