Subtract 3/80 from 18/10
1st number: 1 8/10, 2nd number: 3/80
18/10 - 3/80 is 141/80.
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,
3/80 = 3 × 1/80 × 1 = 3/80 - Subtract the two like fractions:
144/80 - 3/80 = 144 - 3/80 = 141/80 - In mixed form: 161/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-3/80 18/10-6/80 18/20-3/80 54/10-3/80 18/10-9/80 18/30-3/80 90/10-3/80 18/10-15/80 18/50-3/80 18/10-21/80 18/70-3/80