Attached solution with detailed work.
Answer:
.07 * 15.25 = 1.0675
Step-by-step explanation:
By moving the signs he actually changed the number itself. He changed -6 from a negative to a positive and 5 from a positive to a negative. Both equations give different answers.
Hopefully this helps :)
0.32 cents for each unit because if you divide 7.68 by 24 it is 0.32