Answer:
i think 360
Step-by-step explanation:
pretty sure you're supposed to multiply everything
10 1/2 - 5 2/3 =
21/2 - 17/3 =
63/6 - 34/6 =
29/6 or 4 5/6 <==
A=15 because if you subtract 9 from both 9 and 54, you are left with 3a=45. 45 divided by 3 is 15, making a=15
