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4. En déduire que DA=DB. Exercice 2:
1. Résoudre les équations suivantes :
a. 6x = 23
b. 3x – 7 = 2
C. 5x – 3 = 7 + 9x
2. Résoudre les inéquations suivantes :
a. X + 8 > 49
b. - x +1 < 4x
C. - 4x – 5 > 10 + 2x
merci beaucoup d’avance
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