Ahh still get get it..math problems?

Question

Subtract (enter as an improper fraction)
Jim needs 3 ½ yards of burlap to cover his bulletin board. His brother gives him 1 1/6yards. How much more does Jim need to purchase?
____ Yards

3 ½ x 6
1 1/6 x 2

6/12
2/12

3 6/12
-
1 2/12
_____
2 4/12


Add (enter as an improper fraction)
The office had 12 ½ dozen boxes of envelops. They ordered 14 ¾ dozen more. How many dozen do they have now?
____ Dozen


12 ½
14 ¾

½ x 4
¾ x 2

4/8

6/8

12 4/8
+
14 6/8
______
26 10/8


Add (enter as an improper fraction)
You are decorating the school for the Christmas party. So far, you have used 12 ½ yards of silver rope. You have 36 2/3 yards left. How much did you have to start with?
____ Yards

12 ½
36 2/3

½ x 3 = 3/6
2/3 x 2 = 4/6

12 3/6
+
36 4/6
_____
48 7/6

Okay those are all the ones I have done. And the answer is still wrong some how...can anyone tell me what I am doing wrong?

Well I thought about that but each question calls for this (enter as an improper fraction) so doing that didnt help me..I can try and add them in and see if its counted right.

Well the thing is I do this all on the computer. So if the program I use wont take the answer then it is wrong. So I dont know what to do if none of them are working..

Ah thank you jaycee99999999 the computer took that answer. Now for me to do the others.

Thank you..I am still not getting the whole "simplify" thing. But on the net..cant be that hard to find and understand it.

Answer 1

an improper fraction is when the numerator is a larger number than the denominator so for the first one you have it to
2 4/12
then take the whole number, 2, and multiply it by the denomintor, 12
so 2*12 = 24
then you take the 24 and add it to the numerator of 4 to get 28
which makes 28/12 and to simplify that to the answer
7/3 yards

2. 26 10/8 = 26 5/4
26*4 = 104
104+5= 109
109/4

3. 48 7/6
48*6 = 288
288+7= 295
295/6

Answer 2

you can reduce first answer to 1/3 other than that it looked right.
on number 2 you could have multiplied top fraction by 2 and not had to multiple bottom on by anything, will still work though. you have 26 and 10/8 which should become 27 and 1/4. number 3 would be 49 and 1/6. not sure if this helped, but it looks like your doing everything right. it's possible your book may have wrong answers in it too, i've run into that before.

Answer 3

You need to completely reduce the fractions:

2 4/12 = 1 1/3

26 10/8 = 27 2/8 = 27 1/4

48 7/6 = 49 1/6

BTW - I didn't check your actual math, I just reduced the answers.