(3x+1)(2x-3)+4(x-2)=5(4-3x)
6x^2-9x+2x-3+4x-8=20-15x
6x^2-9x+2x+4x+15x-20-8-3=0
6x^2+12x-31=0
d=144-4*6*(-31)=888
x1=-12-sqrt888/12
x2=-12+sqrt888/12