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Exercice 1 : Résoudre ces équations.
X - 5 = 3
X + 8 = - 12
4x = 36
X: 8 = 15
5x – 3 = 12
4 + 5x = 8
3x + 1 = 19
-3 + 5x = 12
2x 7 - x = 3x-3
x2=16
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Sagot :

Réponse:

x-5 = 3

x = -2

x+8 = -12

x = -4

4x = 36

x = 9

5x -3 = 12

5x = 9

4 + 5x = 8

5x = 4

x = 4:5

3x +1 = 19

3x = 18

x = 6

-3 + 5x = 12

5x = 15

x = 3

2x 7 -x = 3x -3

2×7 = 4x -3

7 = 2x -3

4 = 2x

4 = x

2x = 16

x = 8

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