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Sagot :

EVANGILI21

1= X+Y-Z

-7+4--10

-7+4+10

-3+10

7

2= Y-X+Z

4--7+-10

4+7+-10

11+-10

1

NIPUNBACHU

Réponse :

x = -7, y = 4 et z = -10

x + y - z = -7 + 4 - ( -10) = -7 + 4 + 10 = 7

y - x + z = 4 - (-7) - 10 = 4 + 7 - 10 = 11 - 10 = 1

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