Subtract 27/10 from 72/28
1st number: 2 16/28, 2nd number: 2 7/10
72/28 - 27/10 is -9/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
72/28 = 72 × 5/28 × 5 = 360/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
27/10 = 27 × 14/10 × 14 = 378/140 - Subtract the two like fractions:
360/140 - 378/140 = 360 - 378/140 = -18/140 - After reducing the fraction, the answer is -9/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-54/10 72/56-27/10 72/28-27/20 72/28-81/10 72/84-27/10 72/28-27/30 72/28-27/50 72/28-27/70