1. 18/8 as a mixed number is 2 2/8. When it is simplified, it is 2 1/4. To convert an improper fraction into a mixed number, divide the numerator by the denominator. Your quotient is the whole number, and your remainder is your numerator. Remember to keep the denominator the same. To make a mixed number into a simplified fraction, find the greatest common factor of the denominator and the numerator. Then, divide both numbers by the greatest common factor. When you cannot divide the numerator and denominator any further, that will be your simplified fraction. Remember to keep the whole number the same.
2. 1 7/12 as an improper fraction is 19/12. To convert a mixed number into an improper fraction, multiply the whole number with the denominator, and add the numerator to it. That number will become your numerator. Remember to keep the denominator the same.