=> (2x+2)(3x-15) = (3x-6)(2x-6)
=> 6x2-30x+6x-30 = 6x2-18x-12x+36
=> 6x2-30x+6x-30-6x2+18x+12x-36 = 0
=> 6x - 96 = 0
=> 6x = 96
=> x = 96/6
=> x = 16
Vậy x = 16