Subtract 1/20 from 25/16
1st number: 1 9/16, 2nd number: 1/20
25/16 - 1/20 is 121/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
25/16 = 25 × 5/16 × 5 = 125/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
1/20 = 1 × 4/20 × 4 = 4/80 - Subtract the two like fractions:
125/80 - 4/80 = 125 - 4/80 = 121/80 - In mixed form: 141/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/16-1/20 25/16-2/20 25/32-1/20 25/16-1/40 75/16-1/20 25/16-3/20 25/48-1/20 25/16-1/60 25/16-5/20 25/80-1/20 25/16-7/20