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Sagot :

VINS

bonsoir

( 2 x+ 1 ) / ( 1 - 3 x ) =  1/2

4 x + 2 = 1 - 3 x

4 x + 3 x = 1 - 2

7 x = - 1

x = - 1/7

2 )   x² + 2 x + 1 = 4 - 4 x + x²

    x² - x² + 2 x + 4 x = 4 - 1

   6 x = 3

   x = 3/6 = 1/3

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