Subtract 5/9 from 21/8
1st number: 2 5/8, 2nd number: 5/9
218 - 59 is 14972.
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,
218 = 21 × 98 × 9 = 18972 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
59 = 5 × 89 × 8 = 4072 - Subtract the two like fractions:
18972 - 4072 = 189 - 4072 = 14972 - In mixed form: 2572
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-5/9 21/8-10/9 21/16-5/9 21/8-5/18 63/8-5/9 21/8-15/9 21/24-5/9 21/8-5/27 21/8-25/9 21/40-5/9 21/8-5/45 21/8-35/9 21/56-5/9 21/8-5/63