Bonjour svp :(x-1)/4=5 ; 3x-4=-1 ; x/5=8/10 ; (1/6)x = 3 ; 7(x-1)=4(x-1) ; x+13=3(x-9) ; 5(x-4)-(2x-3)=10 ; (x-1)/4=(x+3)/5
Mathématiques
moussa30
Question
Bonjour svp :(x-1)/4=5 ; 3x-4=-1 ; x/5=8/10 ; (1/6)x = 3 ; 7(x-1)=4(x-1) ; x+13=3(x-9) ; 5(x-4)-(2x-3)=10 ; (x-1)/4=(x+3)/5 ; 2+ (3x/5) =x
1 Réponse
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1. Réponse winner123
bonsoir
x - 1 = 20
x = 21
3 x - 4 = - 1
3 x = - 1 +4
3 x = 3
x = 1
x/5 = 8/10
10 x = 40
x = 4
1/6 x = 3
x = 18
7 x - 7 = 4 x - 4
7 x - 4 x = - 4 + 7
3 x = 3
x = 1
x + 13 = 3 x - 27
x - 3 x = - 27 - 13
- 2 x = - 40
x = 20
5 x - 20 - 2 x + 3 = 10
3 x = 10 + 20 - 3
3 x = 17
x = 17/3
(x -1)/4 = ( x + 3)/5
5 x - 5 = 4 x + 12
5 x - 4 x = 12 + 5
x = 17
2 + 3x/5 = x
10 + 3 x = 5 x
3 x - 5 x = - 10
- 2 x = - 10
x = 5