The browser used for posting questions on this site is rubbish. It is quite useless for mathematics since it strips out most symbols so that we cannot tell what the question is meant to be. Here it is not clear whether the fraction is meant to be 140/96 or 1409/6 (or even something else)
There are none. Any improper fraction can be converted ito a mixed fraction and conversely.
it is fraction with the numerator greater than or equal to the denominator
Any fraction in which the top is greater than the bottom number can be converted to a mixed number.
Mixed fractions can be converted into improper fractions then changed back to a mixed number.
The fraction 8/5 can be converted into the mixed fraction 1 and 3/5.
37/3 is a fraction not a mixed number but if converted to 12 and 1/3 it is a mixed number
43 is an integer and so there is no sensible way of writing it as a fraction or mixed number.
0.4737
No. A mixed number is one where there is a whole number and a fraction. If the whole number is 0 there is no whole number and all that remains is the fraction. All improper (top heavy) fractions can be converted to a mixed number.
2.7 as an improper fraction is 27/10. It is 2 7/10 as a mixed number.
3 and 3/3 12/3
23 = 7.6666666666666666666666666666667 __ 3