Subtract 14/42 from 18/28
18/28 - 14/42 is 13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
18/28 = 18 × 3/28 × 3 = 54/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
14/42 = 14 × 2/42 × 2 = 28/84 - Subtract the two like fractions:
54/84 - 28/84 = 54 - 28/84 = 26/84 - After reducing the fraction, the answer is 13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-14/42 18/28-28/42 18/56-14/42 18/28-14/84 54/28-14/42 18/84-14/42 90/28-14/42 18/28-70/42 18/28-98/42