Subtract 21/5 from 63/36
1st number: 1 27/36, 2nd number: 4 1/5
63/36 - 21/5 is -49/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 5 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
63/36 = 63 × 5/36 × 5 = 315/180 - Likewise, for the 2nd fraction, since 5 × 36 = 180,
21/5 = 21 × 36/5 × 36 = 756/180 - Subtract the two like fractions:
315/180 - 756/180 = 315 - 756/180 = -441/180 - After reducing the fraction, the answer is -49/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/36-42/5 63/72-21/5 63/36-21/10 63/36-63/5 63/36-21/15 63/36-21/25 63/36-21/35