.3x = -12

well somehow I dont understand the mathmatics about how this equation is translated. well in order to get rid of the x... we.3x/.3.dont understand.

then we, I think .3x/3 = -12/.3 the answer is -40. well first I dont understand why we divide .3x/3 and get .3 second, Idont uderstand how -12/.3 =-40. doesnt -12/.3 =-.4 if you can explain . this would help me understand the process . ps my book says the answer is -40