Subtract 63/80 from 18/10
1st number: 1 8/10, 2nd number: 63/80
18/10 - 63/80 is 81/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
18/10 = 18 × 8/10 × 8 = 144/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
63/80 = 63 × 1/80 × 1 = 63/80 - Subtract the two like fractions:
144/80 - 63/80 = 144 - 63/80 = 81/80 - In mixed form: 11/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-63/80 18/20-63/80 54/10-63/80 18/30-63/80 90/10-63/80 18/50-63/80 18/70-63/80