Subtract 48/18 from 21/14
1st number: 1 7/14, 2nd number: 2 12/18
21/14 - 48/18 is -7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
21/14 = 21 × 9/14 × 9 = 189/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
48/18 = 48 × 7/18 × 7 = 336/126 - Subtract the two like fractions:
189/126 - 336/126 = 189 - 336/126 = -147/126 - After reducing the fraction, the answer is -7/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-48/18 21/14-96/18 21/28-48/18 21/14-48/36 63/14-48/18 21/42-48/18 21/14-48/54 21/70-48/18 21/14-48/90 21/98-48/18