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Sagot :

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bonsoir

2 x - 14

- 3 x + 3

2 x - 14 = - 3 x + 3

2 x + 3 x = 3 + 14

5 x = 17

x = 17/5

42 - 14 x - 12 x - 3 = 0

- 26 x = - 42 + 3

- 26 x  = - 39

x = 39/26  = 3/2

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