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Sagot :

ROMY670

Réponse:

2(x + 3) = 13

2x+6=13

2x=7

x=7/2

3x = 2x + 5

x=5

4x + 2 = x + 11

3x=9

x=3

5x - 1 = 7x - 1

-2x=0

x=0/-2

x=0

NBA10

Réponse :

bonjour

2(x + 3) = 13

2x +6 = 13

2x = 13 - 6

2x = 7

x = 7/2

3x = 2x + 5

3x - 2x = 5

x = 5

4x + 2 = x + 11

4x -x  +2 = 11

3x = 11-2

3x = 9

x = 9/3

x=3

5x - 1 = 7x - 1

5x-7x -1 = - 1

-2x -1 = -1

-2x = -1 +1

-2x = 0

x = 0

voila ;)

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