(3a2)(5a3)
how to simplify this?

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.

2x minus y equals 6, x plus y equals negative 3

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top