Subtract 21/16 from 10/80
1st number: 10/80, 2nd number: 1 5/16
10/80 - 21/16 is -19/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
10/80 = 10 × 1/80 × 1 = 10/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Subtract the two like fractions:
10/80 - 105/80 = 10 - 105/80 = -95/80 - After reducing the fraction, the answer is -19/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-21/16 10/80-42/16 10/80-21/32 30/80-21/16 10/80-63/16 10/80-21/48 50/80-21/16 10/80-21/80 70/80-21/16