Subtract 42/28 from 18/10
1st number: 1 8/10, 2nd number: 1 14/28
18/10 - 42/28 is 3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 10 × 14 = 140,
18/10 = 18 × 14/10 × 14 = 252/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
42/28 = 42 × 5/28 × 5 = 210/140 - Subtract the two like fractions:
252/140 - 210/140 = 252 - 210/140 = 42/140 - After reducing the fraction, the answer is 3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-42/28 18/10-84/28 18/20-42/28 18/10-42/56 54/10-42/28 18/30-42/28 18/10-42/84 90/10-42/28 18/50-42/28 18/70-42/28