Subtract 49/63 from 12/18
12/18 - 49/63 is -1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
49/63 = 49 × 2/63 × 2 = 98/126 - Subtract the two like fractions:
84/126 - 98/126 = 84 - 98/126 = -14/126 - After reducing the fraction, the answer is -1/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-49/63 12/18-98/63 12/36-49/63 36/18-49/63 12/54-49/63 60/18-49/63 12/90-49/63 84/18-49/63