Subtract 30/63 from 28/12
1st number: 2 4/12, 2nd number: 30/63
28/12 - 30/63 is 13/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
28/12 = 28 × 21/12 × 21 = 588/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
30/63 = 30 × 4/63 × 4 = 120/252 - Subtract the two like fractions:
588/252 - 120/252 = 588 - 120/252 = 468/252 - After reducing the fraction, the answer is 13/7
- In mixed form: 16/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12-30/63 28/12-60/63 28/24-30/63 84/12-30/63 28/12-90/63 28/36-30/63 28/60-30/63 28/84-30/63