Subtract 63/40 from 42/14
1st number: 3 0/14, 2nd number: 1 23/40
42/14 - 63/40 is 57/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
42/14 = 42 × 20/14 × 20 = 840/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
63/40 = 63 × 7/40 × 7 = 441/280 - Subtract the two like fractions:
840/280 - 441/280 = 840 - 441/280 = 399/280 - After reducing the fraction, the answer is 57/40
- In mixed form: 117/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14-63/40 42/28-63/40 42/14-63/80 42/70-63/40 42/98-63/40