Subtract 42/40 from 63/4
1st number: 15 3/4, 2nd number: 1 2/40
63/4 - 42/40 is 147/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
63/4 = 63 × 10/4 × 10 = 630/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
42/40 = 42 × 1/40 × 1 = 42/40 - Subtract the two like fractions:
630/40 - 42/40 = 630 - 42/40 = 588/40 - After reducing the fraction, the answer is 147/10
- In mixed form: 147/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/4-84/40 63/8-42/40 63/4-42/80 63/12-42/40 63/20-42/40 63/28-42/40