Subtract 6/7 from 42/2
1st number: 21 0/2, 2nd number: 6/7
42/2 - 6/7 is 141/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
42/2 = 42 × 7/2 × 7 = 294/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
6/7 = 6 × 2/7 × 2 = 12/14 - Subtract the two like fractions:
294/14 - 12/14 = 294 - 12/14 = 282/14 - After reducing the fraction, the answer is 141/7
- In mixed form: 201/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-6/7 42/2-12/7 42/4-6/7 42/2-6/14 42/2-18/7 42/6-6/7 42/2-6/21 42/2-30/7 42/10-6/7 42/2-6/35 42/2-42/7 42/14-6/7 42/2-6/49