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Sagot :

Bonjour,
1)
-3 2 1
4 0 -4
-1 -2 3


2)
-12 4 -5 11 2
-4 12 -2 -11 5
-1 -10 6 -3 8
7 -7 9 0 -9
10 1 -8 3 -6

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