Subtract 8/9 from 42/7
1st number: 6 0/7, 2nd number: 8/9
42/7 - 8/9 is 46/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 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 9 × 7 = 63,
8/9 = 8 × 7/9 × 7 = 56/63 - Subtract the two like fractions:
378/63 - 56/63 = 378 - 56/63 = 322/63 - After reducing the fraction, the answer is 46/9
- In mixed form: 51/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-8/9 42/7-16/9 42/14-8/9 42/7-8/18 42/7-24/9 42/21-8/9 42/7-8/27 42/7-40/9 42/35-8/9 42/7-8/45 42/7-56/9 42/49-8/9 42/7-8/63