You have to solve for x

Answer question above and explain each step : )

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.