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April 2019
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Aider moi svp c'est urgent
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benjamtexbenji
Equation 1 :
3s + 5t = 32
3×3 + 5×4 = 9 + 20 = 29
NON
equation 2 :
3s + 4t= 25
3×3 + 4×4 = 9+16=25
OUI
système:
(3s+5t=32 ( × (-1)) (×4)
(3s+4t=25 (× (-5))
(-3s-5t=-32
+(3s+4t=25
-1t = -7
t = 7
(12s+20t= 128
+(-15s-20t= -125
-3s = 3
s= -1
Le couple (-1; 7) est solution de ce système
NON
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Commentaires
Aucune justification n'est demandée.
Equation 1 ⇒
Non
Equation 2 ⇒
Oui
Système ⇒
Non
0 votes
Thanks 0
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3s + 5t = 32
3×3 + 5×4 = 9 + 20 = 29
NON
equation 2 :
3s + 4t= 25
3×3 + 4×4 = 9+16=25
OUI
système:
(3s+5t=32 ( × (-1)) (×4)
(3s+4t=25 (× (-5))
(-3s-5t=-32
+(3s+4t=25
-1t = -7
t = 7
(12s+20t= 128
+(-15s-20t= -125
-3s = 3
s= -1
Le couple (-1; 7) est solution de ce système
NON
Equation 1 ⇒ Non
Equation 2 ⇒ Oui
Système ⇒ Non