Subtract 4/42 from 54/20
1st number: 2 14/20, 2nd number: 4/42
54/20 - 4/42 is 547/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
54/20 = 54 × 21/20 × 21 = 1134/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
4/42 = 4 × 10/42 × 10 = 40/420 - Subtract the two like fractions:
1134/420 - 40/420 = 1134 - 40/420 = 1094/420 - After reducing the fraction, the answer is 547/210
- In mixed form: 2127/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20-8/42 54/40-4/42 54/20-4/84 54/20-12/42 54/60-4/42 54/20-20/42 54/20-28/42