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Sagot :

Bonjour,

2/5 - 1/5x - 4/3 = 2/15

6/15 - 3/15x - 20/15 = 2/15

- 3/15x = 2/15 - 6/15 + 20/15

- 3x = 2 + 20 - 6

- 3x = 16

x = - 16/3

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