Hi Bamdeedaowzwbi
Lets find the LCD of both fractions which is 14
now make the denominators (bottom numbers) the same as the LCD (14)
Okay now subtract now that the denominators are the same
join the denominators together
simplify it
Answer: 5/14
*Key word in the question was difference, difference in math definition means subtraction.
-2 dropped in that hour of time
Answer:
There are 10 odd numbers: {1, 3, 5, 7, 9, 11, 13, 15, 17, 19} There are 4 factors of 8: {1, 2, 4, 8} There is 1 number in both lists: {1} Probability of an odd or a factor of 8 = (10 + 4 - 1)/20 = 13/20