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Sagot :

Bonjour,

2x+5=3x-9

2x - 3x = - 9 - 5

- x = - 14

x = 14

8=3x-9

3x = 8 + 9

3x = 17

x = 17/3

5-x=x+4

- x - x = 4 - 5

- 2x = - 1

x = 1/2

-6x+4=2x​

- 6x - 2x = - 4

- 8x = - 4

x = 4/8

x = 1/2.

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