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Sagot :

VINS

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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