Subtract 42/84 from 63/5
1st number: 12 3/5, 2nd number: 42/84
63/5 - 42/84 is 121/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
63/5 = 63 × 84/5 × 84 = 5292/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
42/84 = 42 × 5/84 × 5 = 210/420 - Subtract the two like fractions:
5292/420 - 210/420 = 5292 - 210/420 = 5082/420 - After reducing the fraction, the answer is 121/10
- In mixed form: 121/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/10-42/84 63/15-42/84 63/25-42/84 63/35-42/84