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Sagot :

Hello,

Il faut résoudre les équations.

5/3x = 4

x = 4 * 3/5 = 12/5

6x - 7 = 8

6x = 8 + 7

6x = 15

x = 15/6

8 - 7x = 57

-7x = 57 - 8

-7x = 49

x = -49/7 = -7

2x - 11 = 7x + 4

2x - 7x = 4 + 11

-5x = 15

x = -15/5 = -3

6 - 3x = 15 + 4x

- 3x - 4x = 15 - 6

-7x = 9

x = -9/7

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