Answer:
The first term should be positive, the second term should be positive, the last term should be -1 1/2 rather than -1 1/4
Explanation:
A negative multiplied by a negative results in a positive. The first two terms were negatives multiplied by a negative, yet Daniel still wrote them as negative. This is an error.
Additionally, there is a multiplication error in the third term. 2 times 3/4ths does not equal 1 1/4.