Subtract 63/30 from 21/3
1st number: 7 0/3, 2nd number: 2 3/30
21/3 - 63/30 is 49/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 3 × 10 = 30,
21/3 = 21 × 10/3 × 10 = 210/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
63/30 = 63 × 1/30 × 1 = 63/30 - Subtract the two like fractions:
210/30 - 63/30 = 210 - 63/30 = 147/30 - After reducing the fraction, the answer is 49/10
- In mixed form: 49/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-63/30 21/6-63/30 21/3-63/60 63/3-63/30 21/9-63/30 21/3-63/90 21/15-63/30