bonjour
3 - 8 x + 4 = 3 - 3 x + 6
- 8 x + 3 x = 9 - 7
- 5 x = 2
x = - 2/5
7 x /4 + 5 = 5 x /6 - 1/3
21 x /12 + 60 /12 = 10 x /12 - 4 /12
21 x - 10 x = - 4 - 60
11 x = - 64
x = - 64 /11
7 + 20 - 10 x = - 1 - 6 + 4 x
- 10 x - 4 x = - 7 + 7 - 20
- 14 x = - 20
x = 20/14
x = 10/7
femmes = x
hommes = x + 4
x + 4 = 2 ( x - 3 )
x + 4 = 2 x - 6
x - 2 x = - 6 - 4
- x = - 10
x = 10
il y a 10 femmes et 14 hommes
si 3 femmes partent il y a 7 femmes et 14 hommes soit le double
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bonjour
3 - 8 x + 4 = 3 - 3 x + 6
- 8 x + 3 x = 9 - 7
- 5 x = 2
x = - 2/5
7 x /4 + 5 = 5 x /6 - 1/3
21 x /12 + 60 /12 = 10 x /12 - 4 /12
21 x - 10 x = - 4 - 60
11 x = - 64
x = - 64 /11
7 + 20 - 10 x = - 1 - 6 + 4 x
- 10 x - 4 x = - 7 + 7 - 20
- 14 x = - 20
x = 20/14
x = 10/7
femmes = x
hommes = x + 4
x + 4 = 2 ( x - 3 )
x + 4 = 2 x - 6
x - 2 x = - 6 - 4
- x = - 10
x = 10
il y a 10 femmes et 14 hommes
si 3 femmes partent il y a 7 femmes et 14 hommes soit le double