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1 7/12 (one and seven-twelfths)
3 3/8
To add the fractions five ninths and negative three eighths, you need to find a common denominator. The least common multiple of nine and eight is 72. Convert both fractions to have a denominator of 72 and then add the numerators. The result is -17/72.
One third is four-twelfths, one quarter is three-twelfths, add one-twelfth. So the total is eight-twelfths (two thirds).
A common denominator is 32.