Subtract 63/40 from 1/20
1st number: 1/20, 2nd number: 1 23/40
1/20 - 63/40 is -61/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
1/20 = 1 × 2/20 × 2 = 2/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
63/40 = 63 × 1/40 × 1 = 63/40 - Subtract the two like fractions:
2/40 - 63/40 = 2 - 63/40 = -61/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20-63/40 1/40-63/40 1/20-63/80 3/20-63/40 1/60-63/40 5/20-63/40 7/20-63/40