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Stellouu
@Stellouu
April 2019
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Mathématiques: Exercice niveau 4eme!
20page 92:Résoudre les équations.
a) 3x-7=2x+9
b) 32-15x= -18+10x
c) 1.5x=305x-10
d)x/2+14=x/2-3
merci de m'aider car là je galère!
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slyz007
Verified answer
A) 3x-7=2x+9
3x-2x=9+7
x=16
b) 32-15x=-18+10x
10x+15x=32+18
25x=50
x=2
c) 1,5x=305x-10
3,5x-1,5x=10
2x=10
x=5
d) x/2+14=x/2-3 impossible donc pas de solution
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Verified answer
A) 3x-7=2x+93x-2x=9+7
x=16
b) 32-15x=-18+10x
10x+15x=32+18
25x=50
x=2
c) 1,5x=305x-10
3,5x-1,5x=10
2x=10
x=5
d) x/2+14=x/2-3 impossible donc pas de solution