Answer:
12.7
Explanation:
Like on a number line? If so, draw it out and count.
I can't really do that for you here, but starting at -11.5, how many units do you have to move right to get to 0? 11.5, right?
Then from there, how many units do you continue to move right to get to +1.2? That's just 1.2, right?
Now add them together:
11.5 + 1.2 = 12.7