So 12/15 simplifies to 4/5, and if you multiply both sides by two you have 8/10 so i guess 2 ( and some extra )
I got 6 and -7 when I did this problem, maybe you made a mistake or maybe I did. But you are on the right track
Answer:
A. 
Step-by-step explanation:

I am joyous to assist you anytime.
Answer:
What is the question for the exercise?
Step-by-step explanation:
Tell me, and I might help u