Subtract 28/30 from 4/5
4/5 - 28/30 is -2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
4/5 = 4 × 6/5 × 6 = 24/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Subtract the two like fractions:
24/30 - 28/30 = 24 - 28/30 = -4/30 - After reducing the fraction, the answer is -2/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5-28/30 4/5-56/30 4/10-28/30 4/5-28/60 12/5-28/30 4/5-84/30 4/15-28/30 4/5-28/90 20/5-28/30 4/25-28/30 28/5-28/30 4/35-28/30