What am I doing sumbody please help

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15