Subtract 28/30 from 80/15
1st number: 5 5/15, 2nd number: 28/30
80/15 - 28/30 is 22/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
80/15 = 80 × 2/15 × 2 = 160/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Subtract the two like fractions:
160/30 - 28/30 = 160 - 28/30 = 132/30 - After reducing the fraction, the answer is 22/5
- In mixed form: 42/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15-56/30 80/30-28/30 80/15-28/60 80/15-84/30 80/45-28/30 80/15-28/90 80/75-28/30