Subtract 1/21 from 18/14
1st number: 1 4/14, 2nd number: 1/21
18/14 - 1/21 is 26/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
18/14 = 18 × 3/14 × 3 = 54/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
1/21 = 1 × 2/21 × 2 = 2/42 - Subtract the two like fractions:
54/42 - 2/42 = 54 - 2/42 = 52/42 - After reducing the fraction, the answer is 26/21
- In mixed form: 15/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/14-1/21 18/14-2/21 18/28-1/21 18/14-1/42 54/14-1/21 18/14-3/21 18/42-1/21 18/14-1/63 90/14-1/21 18/14-5/21 18/70-1/21 18/14-7/21 18/98-1/21