First of all, I'd suggest that you use a new, clean, blank line for every bit of new information.
-1/4 divided by 3/2 = -4/1 times 3/2 Do NOT insert another " = " sign here, but move on to a new line.
"-1/4 divided by 3/2 = -4/1 times 3/2 =-12/2 = -6"
You are dividing -1/4 by 3/2. To do this, invert 3/2 and then multiply:
-1 2
---- * ---- = -1/6
4 3
Notice how I have only ONE " = " sign here.