Subtract 9/7 from 28/60
1st number: 28/60, 2nd number: 1 2/7
28/60 - 9/7 is -86/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
28/60 = 28 × 7/60 × 7 = 196/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
9/7 = 9 × 60/7 × 60 = 540/420 - Subtract the two like fractions:
196/420 - 540/420 = 196 - 540/420 = -344/420 - After reducing the fraction, the answer is -86/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/60-9/7 28/60-18/7 28/60-9/14 84/60-9/7 28/60-27/7 28/60-9/21 28/60-45/7 28/60-9/35 28/60-63/7 28/60-9/49