Subtract 35/28 from 28/30
1st number: 28/30, 2nd number: 1 7/28
28/30 - 35/28 is -19/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
28/30 = 28 × 14/30 × 14 = 392/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
35/28 = 35 × 15/28 × 15 = 525/420 - Subtract the two like fractions:
392/420 - 525/420 = 392 - 525/420 = -133/420 - After reducing the fraction, the answer is -19/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-35/28 28/30-70/28 28/60-35/28 28/30-35/56 84/30-35/28 28/90-35/28 28/30-35/84