Subtract 21/27 from 8/10
8/10 - 21/27 is 1/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
8/10 = 8 × 27/10 × 27 = 216/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
21/27 = 21 × 10/27 × 10 = 210/270 - Subtract the two like fractions:
216/270 - 210/270 = 216 - 210/270 = 6/270 - After reducing the fraction, the answer is 1/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10-21/27 8/10-42/27 8/20-21/27 8/10-21/54 24/10-21/27 8/10-63/27 8/30-21/27 8/10-21/81 40/10-21/27 8/50-21/27 56/10-21/27 8/70-21/27