Subtract 63/42 from 2/28
1st number: 2/28, 2nd number: 1 21/42
2/28 - 63/42 is -10/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
2/28 = 2 × 3/28 × 3 = 6/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
63/42 = 63 × 2/42 × 2 = 126/84 - Subtract the two like fractions:
6/84 - 126/84 = 6 - 126/84 = -120/84 - After reducing the fraction, the answer is -10/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/28-63/42 2/56-63/42 2/28-63/84 6/28-63/42 2/84-63/42 10/28-63/42 14/28-63/42