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Sagot :

ANAFOULAYAOKAFOUI

Réponse:

a. 2x=-2x+8. c.3x + 5 = 6x - 9

4x=8. -3x=-14

x=2. x=14/3

S={2} S={-14/3}

b.4x - 8 = 7x + 4

-3x=12

x=-4

S={-4}

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