Subtract 20/9 from 84/15
1st number: 5 9/15, 2nd number: 2 2/9
84/15 - 20/9 is 152/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
84/15 = 84 × 3/15 × 3 = 252/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
20/9 = 20 × 5/9 × 5 = 100/45 - Subtract the two like fractions:
252/45 - 100/45 = 252 - 100/45 = 152/45 - In mixed form: 317/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15-40/9 84/30-20/9 84/15-20/18 84/15-60/9 84/45-20/9 84/15-20/27 84/75-20/9 84/15-20/45 84/15-20/63