3/5+1/2x=8/5 3/2x+1/3=7/3-1/2x 3/5(x-5/7)=3/10x 1/3x=2(1/3x-2) POUR DEMAIN ! !
Mathématiques
bintou20005
Question
3/5+1/2x=8/5
3/2x+1/3=7/3-1/2x
3/5(x-5/7)=3/10x
1/3x=2(1/3x-2)
POUR DEMAIN ! !
3/2x+1/3=7/3-1/2x
3/5(x-5/7)=3/10x
1/3x=2(1/3x-2)
POUR DEMAIN ! !
1 Réponse
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1. Réponse maudmarine
3/5+1/2x=8/5
6/10 + 5/10x = 16/10
6 + 5x = 16
5x = 16 - 6
5x = 10
x = 10/5
x = 2
3/2x+1/3=7/3-1/2x
9/6x + 2/6 = 14/6 - 3/6x
9x + 2 = 14 - 3x
9x - 3x = 14 - 2
6x = 12
x = 12/6
x = 2
3/5(x-5/7)=3/10x
3/5x - 15/35 = 3/10x
42/70x - 30/70 = 21/70x
42x - 30 = 21x
42x - 21x = 30
21x = 30
x = 30/21
1/3x=2(1/3x-2)
1/3x = 2/3x - 4
1/3x = 2/3x - 12/3
x - 2x = - 12
- x = - 12
x = 12