(5х+1)(2х-3)=(10х-9)(х-2)

10x^2-15x+2x-3=10x^2-20x-9x+18 10x^2-15x+2x-3-10x^2+20x+9x-18=0 16x-21=0 16x=21 x=21/16=1 5/16