Subtract 7/64 from 21/2
1st number: 10 1/2, 2nd number: 7/64
21/2 - 7/64 is 665/64.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 64 is 64
Next, find the equivalent fraction of both fractional numbers with denominator 64 - For the 1st fraction, since 2 × 32 = 64,
21/2 = 21 × 32/2 × 32 = 672/64 - Likewise, for the 2nd fraction, since 64 × 1 = 64,
7/64 = 7 × 1/64 × 1 = 7/64 - Subtract the two like fractions:
672/64 - 7/64 = 672 - 7/64 = 665/64 - In mixed form: 1025/64
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-7/64 21/2-14/64 21/4-7/64 63/2-7/64 21/2-21/64 21/6-7/64 21/2-35/64 21/10-7/64 21/2-49/64 21/14-7/64