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Lala20
@Lala20
April 2019
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Bonjour à tous
Système à résoudre
2x + y = - 2
x - y = -7
Merci de vos réponse :)
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winner123
Verified answer
Bonsoir
2x + y = - 2
x - y =
-7
3x = -9
x = -3
-3 -y = -7
-y = -7 +3
-y = -4
y = 4
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Verified answer
Bonsoir2x + y = - 2
x - y = -7
3x = -9
x = -3
-3 -y = -7
-y = -7 +3
-y = -4
y = 4