Subtract 80/30 from 2/28
1st number: 2/28, 2nd number: 2 20/30
2/28 - 80/30 is -109/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
2/28 = 2 × 15/28 × 15 = 30/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
80/30 = 80 × 14/30 × 14 = 1120/420 - Subtract the two like fractions:
30/420 - 1120/420 = 30 - 1120/420 = -1090/420 - After reducing the fraction, the answer is -109/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28-80/30 2/56-80/30 2/28-80/60 6/28-80/30 2/84-80/30 2/28-80/90 10/28-80/30 14/28-80/30