Subtract 18/42 from 28/14
1st number: 2 0/14, 2nd number: 18/42
28/14 - 18/42 is 11/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
28/14 = 28 × 3/14 × 3 = 84/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Subtract the two like fractions:
84/42 - 18/42 = 84 - 18/42 = 66/42 - After reducing the fraction, the answer is 11/7
- In mixed form: 14/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-18/42 28/14-36/42 28/14-18/84 84/14-18/42 28/14-54/42 28/42-18/42 28/14-90/42 28/70-18/42 28/98-18/42