(6x-12)(8x+5)=(4x-3)(6x-12)
(6x-12)(8x+5)-(4x-3)(6x-12)=0
(6x-12)[(8x+5)-(4x-3)]=0
6(x-2)(8x+5-4x+3)=0
6(x-2)(4x+8)=0
24(x-2)(x+2)=0
(x-2)(x+2)=0
x=2或x=-2