Subtract 2/21 from 63/42
1st number: 1 21/42, 2nd number: 2/21
63/42 - 2/21 is 59/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
63/42 = 63 × 1/42 × 1 = 63/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
2/21 = 2 × 2/21 × 2 = 4/42 - Subtract the two like fractions:
63/42 - 4/42 = 63 - 4/42 = 59/42 - In mixed form: 117/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-4/21 63/84-2/21 63/42-2/42 63/42-6/21 63/42-2/63 63/42-10/21 63/42-14/21