Subtract 63/21 from 25/10
1st number: 2 5/10, 2nd number: 3 0/21
25/10 - 63/21 is -1/2.
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,
25/10 = 25 × 21/10 × 21 = 525/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
63/21 = 63 × 10/21 × 10 = 630/210 - Subtract the two like fractions:
525/210 - 630/210 = 525 - 630/210 = -105/210 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/10-63/21 25/20-63/21 25/10-63/42 75/10-63/21 25/30-63/21 25/50-63/21 25/70-63/21