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Florent72
@Florent72
May 2019
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Bonsoir, j'ai une question sur une équation. Merci d'avance.
1-x x+1 3x
____ + ____ = ____ + 1
5 4 20
C'est du niveau troisième et évidemment le x est notre inconnue
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inequation
Verified answer
Bonsoir,
Résoudre l'équation suivante:
(1-x)/5 +(x+1)/4= 3x/20 +1
(1-x)/5 +(x+1)/4-3x/20=1
4(1-x) + 5(x+1)/20 -3x/20= 1
(4-4x+5x+5-3x)/ 20= 1
(-2x+9)/ 20= 1
-2x+9= 20
-2x= 20-9
x= -11/2
2 votes
Thanks 0
loulakar
Verified answer
Bonsoir,
1 votes
Thanks 1
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Verified answer
Bonsoir,Résoudre l'équation suivante:
(1-x)/5 +(x+1)/4= 3x/20 +1
(1-x)/5 +(x+1)/4-3x/20=1
4(1-x) + 5(x+1)/20 -3x/20= 1
(4-4x+5x+5-3x)/ 20= 1
(-2x+9)/ 20= 1
-2x+9= 20
-2x= 20-9
x= -11/2
Verified answer
Bonsoir,