Subtract 63/28 from 12/42
1st number: 12/42, 2nd number: 2 7/28
12/42 - 63/28 is -55/28.
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,
12/42 = 12 × 2/42 × 2 = 24/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
63/28 = 63 × 3/28 × 3 = 189/84 - Subtract the two like fractions:
24/84 - 189/84 = 24 - 189/84 = -165/84 - After reducing the fraction, the answer is -55/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42-63/28 12/84-63/28 12/42-63/56 36/42-63/28 12/42-63/84 60/42-63/28 84/42-63/28