Subtract 2/7 from 72/28
1st number: 2 16/28, 2nd number: 2/7
72/28 - 2/7 is 16/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
72/28 = 72 × 1/28 × 1 = 72/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
2/7 = 2 × 4/7 × 4 = 8/28 - Subtract the two like fractions:
72/28 - 8/28 = 72 - 8/28 = 64/28 - After reducing the fraction, the answer is 16/7
- In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-4/7 72/56-2/7 72/28-2/14 72/28-6/7 72/84-2/7 72/28-2/21 72/28-10/7 72/28-2/35 72/28-14/7 72/28-2/49