Subtract 42/54 from 28/10
1st number: 2 8/10, 2nd number: 42/54
28/10 - 42/54 is 91/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
28/10 = 28 × 27/10 × 27 = 756/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Subtract the two like fractions:
756/270 - 210/270 = 756 - 210/270 = 546/270 - After reducing the fraction, the answer is 91/45
- In mixed form: 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10-42/54 28/10-84/54 28/20-42/54 84/10-42/54 28/30-42/54 28/50-42/54 28/70-42/54