9.
Explanation: So for question 9, you need to find the LCD (Least common denominator) so you list out the multiples of 8 and 4, when doing so, you find out that 8 is the LCD of both, since 8 is both a multiple of itself and of 4.
So, to get the answer, you do 4 * 2 and anything you do to the denominator (bottom number), you do to the nominator (top number).
So now you have -8/3/8 +6/2/8 then you just add the nominators and whole numbers like normal. You get, -2/1/8 (Remember you are adding a positive number to a negative number.)
Answer: -2/1/8
10.
Explanation: Same process as question 9.
Answer: -4/1/12
11.
Explanation: Read -7.3 out loud, it would be negative seven and 3 tenths, that makes it easy to convert as a fraction. It would be -7/3/10. Do the same for the other number, and you have -3/6/10, then you just add. You get -10/9/10.
Answer: -10/9/10
12.
Explanation: Same process as question 11. (You're in the thousandths now.) You get 3/535/1000. Reduce.
Answer: 3/107/200
13.
Explanation: You have 2 options here, to convert the decimal into a fraction, or to convert the fraction into a decimal, I'll be changing the fraction into a decimal, you wanna write it as a 10 as a denominator, so to get to 10 you multiply the denominator by 2, and anything you do to the denominator, you do to the nominator. So, -3/2/5 as a decimal is: -3.4, then you go ahead and compare them and you can see that the temperature in town A is colder.
Answer: The temperature in town A is colder.
14.
Explanation: For this one, you just subtract or add the amount to 7number. The dates don't matter, just telling you to do it in that order.
60.68 + 75.50 = 136.18
136.18 - 25.16 = 111.02
111.02 - 82.05 = 28.97
28.97 + 59.95 = 88.92
Answer: $88.92