Subtract 30/28 from 2/10
1st number: 2/10, 2nd number: 1 2/28
2/10 - 30/28 is -61/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 10 × 14 = 140,
2/10 = 2 × 14/10 × 14 = 28/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
30/28 = 30 × 5/28 × 5 = 150/140 - Subtract the two like fractions:
28/140 - 150/140 = 28 - 150/140 = -122/140 - After reducing the fraction, the answer is -61/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/10-30/28 2/10-60/28 2/20-30/28 2/10-30/56 6/10-30/28 2/10-90/28 2/30-30/28 2/10-30/84 2/50-30/28 14/10-30/28 2/70-30/28