Subtract 48/28 from 3/42
1st number: 3/42, 2nd number: 1 20/28
3/42 - 48/28 is -23/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
48/28 = 48 × 3/28 × 3 = 144/84 - Subtract the two like fractions:
6/84 - 144/84 = 6 - 144/84 = -138/84 - After reducing the fraction, the answer is -23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42-48/28 3/42-96/28 3/84-48/28 3/42-48/56 9/42-48/28 3/42-48/84 15/42-48/28 21/42-48/28