Subtract 14/80 from 21/18
1st number: 1 3/18, 2nd number: 14/80
21/18 - 14/80 is 119/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
21/18 = 21 × 40/18 × 40 = 840/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
14/80 = 14 × 9/80 × 9 = 126/720 - Subtract the two like fractions:
840/720 - 126/720 = 840 - 126/720 = 714/720 - After reducing the fraction, the answer is 119/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18-14/80 21/18-28/80 21/36-14/80 63/18-14/80 21/18-42/80 21/54-14/80 21/18-70/80 21/90-14/80 21/18-98/80