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63 Résoudre les équations à l'inconnue réelle x.
b. 3x - 5= x +4
a. 4x + 2 = 2x + 6
C. - 2x + 1 = x - 5
d. 6x - 3= 3x - 10


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b. 3x - 5= x +4

3 x - x = 4 + 5

2 x = 9

x = 9 /2

a. 4x + 2 = 2x + 6

4 x - 2 x = 6 - 2

2 x = 4

x = 4 /2 = 2

C. - 2x + 1 = x - 5

- 2 x - x = - 5 - 1

- 3 x = - 6

x  = 2

d. 6x - 3= 3x - 10

6 x - 3 x = - 10 + 3

3 x = -  7

x = - 7 /3

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