Mathématiques

Question

POUR LUNDI équations au premier degrès

c) 5x/2 - x/3 - 2 = 8/3 + x

2 Réponse

  • 5x/2 - x/3 - 2 = 8/3 + x
    5/2x - 1/3x  -x = 8/3 +2
    15/6x -2/6x -6/6x =  8/3 +6/3
    7/6x = 14/3
    x = 14/3 * 6/7
    x = 14*6 / 3*7
    x = 4
  • 5x/2 - x/3 - 2 = 8/3 + x
    5x/2 - x/3 - 2 - 8/3 - x = 0
    5x/2 - x/3 - x = 14/3
    (5/2 - 1/3 - 1)x = 14/3
    7/6x = 14/3
    x = 14/3 : 7/6
    x = 14/3 x 6/7
    x = (2 x 7)/3 x (2 x 3)/7
    x = 2 x 2
    x = 4

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