Subtract 63/5 from 9/18
1st number: 9/18, 2nd number: 12 3/5
9/18 - 63/5 is -121/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
9/18 = 9 × 5/18 × 5 = 45/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
63/5 = 63 × 18/5 × 18 = 1134/90 - Subtract the two like fractions:
45/90 - 1134/90 = 45 - 1134/90 = -1089/90 - After reducing the fraction, the answer is -121/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/36-63/5 9/18-63/10 27/18-63/5 9/54-63/5 9/18-63/15 45/18-63/5 9/90-63/5 9/18-63/25 63/18-63/5 9/18-63/35