Subtract 27/21 from 48/20
1st number: 2 8/20, 2nd number: 1 6/21
48/20 - 27/21 is 39/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
48/20 = 48 × 21/20 × 21 = 1008/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
27/21 = 27 × 20/21 × 20 = 540/420 - Subtract the two like fractions:
1008/420 - 540/420 = 1008 - 540/420 = 468/420 - After reducing the fraction, the answer is 39/35
- In mixed form: 14/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/20-27/21 48/20-54/21 48/40-27/21 48/20-27/42 48/20-81/21 48/60-27/21 48/20-27/63