Subtract 27/40 from 63/21
1st number: 3 0/21, 2nd number: 27/40
63/21 - 27/40 is 93/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
63/21 = 63 × 40/21 × 40 = 2520/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
27/40 = 27 × 21/40 × 21 = 567/840 - Subtract the two like fractions:
2520/840 - 567/840 = 2520 - 567/840 = 1953/840 - After reducing the fraction, the answer is 93/40
- In mixed form: 213/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21-54/40 63/42-27/40 63/21-27/80 63/21-81/40