Réponses

2013-02-23T13:33:34+01:00

2x/x-1 + ½x = 3/2

x ×(2x/x-1 + ½x) = x × (3/2)

2x/-1 + ½x² = 3/2x

2 × (2x/-1 + ½x²) = 2× (3/2x)

4x/-1 +1x² = 3x

-4x + 1x² = 3x

-4x + 1x²/x = 3

-4 + 1x = 3

1x = 3 +4

1x =7

 

mais j'ai un doute ><