Answer:
Work:
first you want to change 1/2 so the denominator is a 4
1/2 is equivalent to 2/4
now you have -1 1/4 + 2/4
then you want to get rid of the whole number and make -1 1/4 into a fraction
-1 is -4/4 so add that to the 1/4
now you have -5/4 + 2/4
you can add that now easily and get -3/4