Subtract 72/15 from 63/3
1st number: 21 0/3, 2nd number: 4 12/15
63/3 - 72/15 is 81/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
63/3 = 63 × 5/3 × 5 = 315/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
72/15 = 72 × 1/15 × 1 = 72/15 - Subtract the two like fractions:
315/15 - 72/15 = 315 - 72/15 = 243/15 - After reducing the fraction, the answer is 81/5
- In mixed form: 161/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/6-72/15 63/3-72/30 63/9-72/15 63/3-72/45 63/15-72/15 63/3-72/75 63/21-72/15