Not really...simplified it becomes:
90/2 = 45x2/2
= 45
Which is a whole number with no fraction, and hence not strictly "mixed".
However if a question asks for a result to be "simplified to a mixed number" then it is saying do not leave any improper fraction as such but convert them to a mixed number or just a whole number if there is no fractional bit (as in this case).
No. Only when fractions have a numerator bigger that their denominator can they be simplified as a mixed number.
4½
it can't be a mixed number but i can be into 2 over 5
24/6 simplified is 4. There is no mixed number for the 24 over 6.
Yes, 55/4 can be simplified and will be a mixed number. To find the mixed number, divide 55 by 4. The number is 13 3/4.
15/12
14 over 5 may not be simplified. As a mixed number it would be 2 and 4/5.
48/7 is already simplified but as a mixed number it is 6 and 6/7
18/45 is a proper fraction. It can be simplified to 2/5.
It is: 2 and 1/5 simplified
No but as a mixed number it is 3 and 3/20
It is: 9 and 1/3