Subtract 1/15 from 42/28
1st number: 1 14/28, 2nd number: 1/15
42/28 - 1/15 is 43/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
42/28 = 42 × 15/28 × 15 = 630/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
1/15 = 1 × 28/15 × 28 = 28/420 - Subtract the two like fractions:
630/420 - 28/420 = 630 - 28/420 = 602/420 - After reducing the fraction, the answer is 43/30
- In mixed form: 113/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28-1/15 42/28-2/15 42/56-1/15 42/28-1/30 42/28-3/15 42/84-1/15 42/28-1/45 42/28-5/15 42/28-1/75 42/28-7/15