Subtract 4/54 from 21/5
1st number: 4 1/5, 2nd number: 4/54
21/5 - 4/54 is 557/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
21/5 = 21 × 54/5 × 54 = 1134/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
4/54 = 4 × 5/54 × 5 = 20/270 - Subtract the two like fractions:
1134/270 - 20/270 = 1134 - 20/270 = 1114/270 - After reducing the fraction, the answer is 557/135
- In mixed form: 417/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-4/54 21/5-8/54 21/10-4/54 63/5-4/54 21/5-12/54 21/15-4/54 21/5-20/54 21/25-4/54 21/5-28/54 21/35-4/54