Subtract 30/20 from 63/40
1st number: 1 23/40, 2nd number: 1 10/20
63/40 - 30/20 is 3/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
63/40 = 63 × 1/40 × 1 = 63/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
30/20 = 30 × 2/20 × 2 = 60/40 - Subtract the two like fractions:
63/40 - 60/40 = 63 - 60/40 = 3/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/40-60/20 63/80-30/20 63/40-30/40 63/40-90/20 63/40-30/60