Subtract 36/28 from 42/56
1st number: 42/56, 2nd number: 1 8/28
42/56 - 36/28 is -15/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 28 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
42/56 = 42 × 1/56 × 1 = 42/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
36/28 = 36 × 2/28 × 2 = 72/56 - Subtract the two like fractions:
42/56 - 72/56 = 42 - 72/56 = -30/56 - After reducing the fraction, the answer is -15/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-36/28 42/56-72/28 42/56-36/56 42/56-36/84