Answer:
13) 23/4 14) 13/2 15) 6 1/2 16) 2 7/12
Explanation:
13) (4 x 5) + 3 = 23 -> 23/4
14) (2 x 6) + 1 = 13 -> 13/2
15) 13/2 = 6.5, then take the number on the left of the decimal so, 6, as your whole number. After that, multiply it by the denominator so 6 x 2 = 12, then subtract the 12 with the numerator given in the improper fraction so, 13-12 = 1. The answer you get (which is 1 in this case) will be your numerator in for the mixed fraction. -> 6 1/2
Note: the denominator always stays the same
16) 31/12 = 2.58... take the 2 as your whole number.
2(whole number) x 12(denominator) = 24
31 - 24 = 7
= 2 7/12