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Sagot :

Réponse:

a=90 car

120÷4=30

30×3=90

b=8 car:

12÷3=4

4×2=8

c= 90 car:

100÷10=10

10×9=90

d= 14 car:

49÷7=7

7×2=14

Réponse:

a 3*120=360:4=90 b 2*12=24:3=8 c 9*100=900:10=90 d 2*49=98:7=14

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