Subtract 64/21 from 3/10
1st number: 3/10, 2nd number: 3 1/21
3/10 - 64/21 is -577/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
3/10 = 3 × 21/10 × 21 = 63/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
64/21 = 64 × 10/21 × 10 = 640/210 - Subtract the two like fractions:
63/210 - 640/210 = 63 - 640/210 = -577/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/10-64/21 3/20-64/21 3/10-64/42 9/10-64/21 3/30-64/21 3/10-64/63 15/10-64/21 3/50-64/21 21/10-64/21 3/70-64/21