Subtract 28/49 from 42/2
1st number: 21 0/2, 2nd number: 28/49
42/2 - 28/49 is 143/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 49 is 98
Next, find the equivalent fraction of both fractional numbers with denominator 98 - For the 1st fraction, since 2 × 49 = 98,
42/2 = 42 × 49/2 × 49 = 2058/98 - Likewise, for the 2nd fraction, since 49 × 2 = 98,
28/49 = 28 × 2/49 × 2 = 56/98 - Subtract the two like fractions:
2058/98 - 56/98 = 2058 - 56/98 = 2002/98 - After reducing the fraction, the answer is 143/7
- In mixed form: 203/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-28/49 42/2-56/49 42/4-28/49 42/2-28/98 42/2-84/49 42/6-28/49 42/10-28/49 42/14-28/49