Subtract 5/12 from 21/35
21/35 - 5/12 is 11/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
21/35 = 21 × 12/35 × 12 = 252/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
5/12 = 5 × 35/12 × 35 = 175/420 - Subtract the two like fractions:
252/420 - 175/420 = 252 - 175/420 = 77/420 - After reducing the fraction, the answer is 11/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35-5/12 21/35-10/12 21/70-5/12 21/35-5/24 63/35-5/12 21/35-15/12 21/35-5/36 21/35-25/12 21/35-5/60 21/35-35/12 21/35-5/84