Subtract 28/9 from 84/20
1st number: 4 4/20, 2nd number: 3 1/9
84/20 - 28/9 is 49/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
84/20 = 84 × 9/20 × 9 = 756/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
28/9 = 28 × 20/9 × 20 = 560/180 - Subtract the two like fractions:
756/180 - 560/180 = 756 - 560/180 = 196/180 - After reducing the fraction, the answer is 49/45
- In mixed form: 14/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-56/9 84/40-28/9 84/20-28/18 84/20-84/9 84/60-28/9 84/20-28/27 84/20-28/45 84/20-28/63