Subtract 9/7 from 72/28
1st number: 2 16/28, 2nd number: 1 2/7
72/28 - 9/7 is 9/7.
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,
9/7 = 9 × 4/7 × 4 = 36/28 - Subtract the two like fractions:
72/28 - 36/28 = 72 - 36/28 = 36/28 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-18/7 72/56-9/7 72/28-9/14 72/28-27/7 72/84-9/7 72/28-9/21 72/28-45/7 72/28-9/35 72/28-63/7 72/28-9/49