Answer:
7846
Explanation:
two 'minus' signs cancel each other out and become an 'plus' sign
therefore
7512-(-334) = 7512 + 334
= 7846
I don't know why you wrote ' write your answer as a 'mixed number ' in 'simplest form'. A mixed number can only be formed when you have a fraction, an improper fraction no less, the answer is a whole number, and therefore cannot be written as a mixed number in simplest form. If I am wrong pls let me know and elaborate by what you mean by 'mixed number' in the comments.
I believe it may be a trick question, but who knows.
Examples of fractions expressed as a mixed number.
19/8 = 2 3/8
17/5 = 3 2/5