Subtract 70/27 from 21/8
1st number: 2 5/8, 2nd number: 2 16/27
21/8 - 70/27 is 7/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
21/8 = 21 × 27/8 × 27 = 567/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
70/27 = 70 × 8/27 × 8 = 560/216 - Subtract the two like fractions:
567/216 - 560/216 = 567 - 560/216 = 7/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-70/27 21/16-70/27 21/8-70/54 63/8-70/27 21/24-70/27 21/8-70/81 21/40-70/27 21/56-70/27