Subtract 42/56 from 30/15
1st number: 2 0/15, 2nd number: 42/56
30/15 - 42/56 is 5/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
30/15 = 30 × 56/15 × 56 = 1680/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
42/56 = 42 × 15/56 × 15 = 630/840 - Subtract the two like fractions:
1680/840 - 630/840 = 1680 - 630/840 = 1050/840 - After reducing the fraction, the answer is 5/4
- In mixed form: 11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15-42/56 30/15-84/56 90/15-42/56 30/45-42/56 30/75-42/56