Fifteen more than haft a number is 9

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

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.

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.