Subtract 5/30 from 42/28
1st number: 1 14/28, 2nd number: 5/30
42/28 - 5/30 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 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 30 × 14 = 420,
5/30 = 5 × 14/30 × 14 = 70/420 - Subtract the two like fractions:
630/420 - 70/420 = 630 - 70/420 = 560/420 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28-5/30 42/28-10/30 42/56-5/30 42/28-5/60 42/28-15/30 42/84-5/30 42/28-5/90 42/28-25/30 42/28-35/30