Subtract 18/12 from 63/54
1st number: 1 9/54, 2nd number: 1 6/12
63/54 - 18/12 is -1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
63/54 = 63 × 2/54 × 2 = 126/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
18/12 = 18 × 9/12 × 9 = 162/108 - Subtract the two like fractions:
126/108 - 162/108 = 126 - 162/108 = -36/108 - After reducing the fraction, the answer is -1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/54-36/12 63/54-18/24 63/54-54/12 63/54-18/36 63/54-90/12 63/54-18/60 63/54-18/84