Subtract 63/15 from 12/20
1st number: 12/20, 2nd number: 4 3/15
12/20 - 63/15 is -18/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
12/20 = 12 × 3/20 × 3 = 36/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
63/15 = 63 × 4/15 × 4 = 252/60 - Subtract the two like fractions:
36/60 - 252/60 = 36 - 252/60 = -216/60 - After reducing the fraction, the answer is -18/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20-63/15 12/40-63/15 12/20-63/30 36/20-63/15 12/60-63/15 12/20-63/45 60/20-63/15 12/20-63/75 84/20-63/15