Subtract 40/63 from 42/7
1st number: 6 0/7, 2nd number: 40/63
42/7 - 40/63 is 338/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
42/7 = 42 × 9/7 × 9 = 378/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
40/63 = 40 × 1/63 × 1 = 40/63 - Subtract the two like fractions:
378/63 - 40/63 = 378 - 40/63 = 338/63 - In mixed form: 523/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-40/63 42/7-80/63 42/14-40/63 42/21-40/63 42/35-40/63 42/49-40/63