Subtract 50/20 from 28/30
1st number: 28/30, 2nd number: 2 10/20
28/30 - 50/20 is -47/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
28/30 = 28 × 2/30 × 2 = 56/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
50/20 = 50 × 3/20 × 3 = 150/60 - Subtract the two like fractions:
56/60 - 150/60 = 56 - 150/60 = -94/60 - After reducing the fraction, the answer is -47/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-50/20 28/60-50/20 28/30-50/40 84/30-50/20 28/90-50/20 28/30-50/60