Subtract 7/63 from 21/2
1st number: 10 1/2, 2nd number: 7/63
21/2 - 7/63 is 187/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 2 × 63 = 126,
21/2 = 21 × 63/2 × 63 = 1323/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
7/63 = 7 × 2/63 × 2 = 14/126 - Subtract the two like fractions:
1323/126 - 14/126 = 1323 - 14/126 = 1309/126 - After reducing the fraction, the answer is 187/18
- In mixed form: 107/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-7/63 21/2-14/63 21/4-7/63 63/2-7/63 21/2-21/63 21/6-7/63 21/2-35/63 21/10-7/63 21/2-49/63 21/14-7/63