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Sagot :

Réponse:

1) 16×1,0625=17

2) 11×1,6363636364=18

3) 12×(7÷12)=7

4a) 27÷13=2,0769230769

2,0769230769 ×13=26,9999999997

4b) 27÷13=x

x×13=2,0769230769

Explications étape par étape:

17÷16=1,0625

18÷11=1,6363636364

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