Verified answer

bonjour

( 7 x + 4) ( x - 3) = ( 9 x - 5) ( x - 3 )

( 7 x + 4 ) ( x - 3) - ( 9 x - 5) ( x - 3 ) = 0

( x - 3) ( 7 x  + 4 - 9 x + 5) = 0

( x - 3) ( - 2 x  + 9 ) = 0

soit  x - 3 = 0 et x = 3

soit  - 2 x + 9  = 0 et x  =   9/2