Subtract 63/54 from 48/21
1st number: 2 6/21, 2nd number: 1 9/54
48/21 - 63/54 is 47/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
48/21 = 48 × 18/21 × 18 = 864/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378 - Subtract the two like fractions:
864/378 - 441/378 = 864 - 441/378 = 423/378 - After reducing the fraction, the answer is 47/42
- In mixed form: 15/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/21-63/54 48/42-63/54 48/63-63/54