Answer:
-0.6
Step-by-step explanation:
-2.1--0.6=-1 1/2
-2.1-x=-3/2
-x=-3/2+2.1
-x=-3/2+21/10
-x=3/5
x=-3/5
-0.6 is the alternate form
You are not being a bother for needing help.
