Subtract 16/9 from 81/8
1st number: 10 1/8, 2nd number: 1 7/9
81/8 - 16/9 is 601/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
81/8 = 81 × 9/8 × 9 = 729/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
16/9 = 16 × 8/9 × 8 = 128/72 - Subtract the two like fractions:
729/72 - 128/72 = 729 - 128/72 = 601/72 - In mixed form: 825/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/8-32/9 81/16-16/9 81/8-16/18 81/8-48/9 81/24-16/9 81/8-16/27 81/8-80/9 81/40-16/9 81/8-16/45 81/56-16/9 81/8-16/63