( 6x - 1 sur 7 ) ( x + 4 ) + ( 6x - 1 sur 7 ) ( 2x - 3 ) = 0 AIDEZ MOI SVP !!!

bonjour

( 6 x - 1/7)(x +4) + (6x - 1)7 -( 2x -3 ) = 0
(42 x - 1) ( x + 4) + ( 42 x - 1) ( 2 x -3) =0
(42 x - 1) ( x +4 + 2 x -3) = 0
(42 x -1) ( 3x + 1) = 0

soit 42 x - 1 = 0
       42 x = 1
 et x = 1/42

soit  3 x +1 = 0
3x = -1
x = -1/3