Subtract 15/84 from 72/28
1st number: 2 16/28, 2nd number: 15/84
72/28 - 15/84 is 67/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
72/28 = 72 × 3/28 × 3 = 216/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84 - Subtract the two like fractions:
216/84 - 15/84 = 216 - 15/84 = 201/84 - After reducing the fraction, the answer is 67/28
- In mixed form: 211/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-30/84 72/56-15/84 72/28-45/84 72/84-15/84 72/28-75/84