Subtract 63/18 from 4/20
1st number: 4/20, 2nd number: 3 9/18
4/20 - 63/18 is -33/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
63/18 = 63 × 10/18 × 10 = 630/180 - Subtract the two like fractions:
36/180 - 630/180 = 36 - 630/180 = -594/180 - After reducing the fraction, the answer is -33/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20-63/18 4/40-63/18 4/20-63/36 12/20-63/18 4/60-63/18 4/20-63/54 4/20-63/90 28/20-63/18