Résoudre les équations suivantes en laissant apparent les étapes de calcul
5+4y+1=(6y+1)-(5y+3)
(4y-6)-5(3y-1)=(5y-2)-(9y+20)
Je ne veux pas de réponses des 6èmes/5èmes.
6 + 4y = 6y +1 -5y -3
6 + 4y = y -2
4y - y = -2 - 6
3y = -8
y = -8/3
4y -6 -5*3y + 5 = 5y-2 - 9y-20
4y -6 -15y + 5 = -4y -22
-1 -11y = -4y -22
-11y + 4y = -22 + 1
-7y = -21
7y = 21
y = 21/7
y = 3
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5+4y+1=(6y+1)-(5y+3)
6 + 4y = 6y +1 -5y -3
6 + 4y = y -2
4y - y = -2 - 6
3y = -8
y = -8/3
(4y-6)-5(3y-1)=(5y-2)-(9y+20)
4y -6 -5*3y + 5 = 5y-2 - 9y-20
4y -6 -15y + 5 = -4y -22
-1 -11y = -4y -22
-11y + 4y = -22 + 1
-7y = -21
7y = 21
y = 21/7
y = 3