Subtract 1/20 from 30/56
30/56 - 1/20 is 17/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
30/56 = 30 × 5/56 × 5 = 150/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
1/20 = 1 × 14/20 × 14 = 14/280 - Subtract the two like fractions:
150/280 - 14/280 = 150 - 14/280 = 136/280 - After reducing the fraction, the answer is 17/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/56-1/20 30/56-2/20 30/56-1/40 90/56-1/20 30/56-3/20 30/56-1/60 30/56-5/20 30/56-7/20