-7 3/10 - -4 4/5 . Can someone help?

-12.1 is the answer . just divide it right

This turns to 
-7 3/10 + 4 4/5

Now we must get common denominators so that we can get the correct answer.
The second denominator turns to 4 8/10

Now we subtract
-7+4= -3
3/10-8/10= -.5
 
We get -3.5 as the answer.

The graph isn’t that clear