October 2020 0 170 Report
Bonjour vous pouvez m'aider s' il vous plait sur le Calcul littéral (4ème) merci d'avance : 1. 9-(a-b)=

2. 3-(a+b)=

3. -3(-a+b-c+y-x)=

4. 3a-(a+y-2c+b+x)=

5. 5b-(a-b)=

6. y+y=

7. x-6x²+3x-2+x²-2x-1=

8. y+7y=

9. 6k-9k=

10. -x²-3x²
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