( 3х + 4 ) ( 4х - 3 ) - 3 = ( 2х + 5 ) ( 6х - 7 )

12х-9х+16х-12=12х-14х+30х-3512х-12х-9х+16х+14х-30х=12-3521х=-23х=-23/21

( 3х + 4 ) ( 4х - 3 ) - 3 = ( 2х + 5 ) ( 6х - 7 )12x²+16x-9x-12-3=12x²-14x+30x-357x-15=16x-3520=9xx=20/9=2 и 2/9