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Sagot :

Bonjour

Calculer ces expressions :

6x-3=5

6x = 5 + 3

6x = 8

x = 8/6

x = 4/3

7(x+1)=5x-1

7x + 7 = 5x - 1

7x - 5x = - 1 - 7

2x = - 8

x = - 8/2

x = - 4

-3x+4=5(x+2/5)

- 3x + 4 = 5x + 10/5

- 3x + 4 = 5x + 2

- 3x - 5x = 2 - 4

- 8x = - 6

x = 6/8

x = 3/2.

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