Subtract 63/9 from 9/20
1st number: 9/20, 2nd number: 7 0/9
9/20 - 63/9 is -131/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
63/9 = 63 × 20/9 × 20 = 1260/180 - Subtract the two like fractions:
81/180 - 1260/180 = 81 - 1260/180 = -1179/180 - After reducing the fraction, the answer is -131/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-63/9 9/40-63/9 9/20-63/18 27/20-63/9 9/60-63/9 9/20-63/27 45/20-63/9 9/20-63/45 63/20-63/9