Add 81/15 and 42/98
1st number: 5 6/15, 2nd number: 42/98
81/15 + 42/98 is 204/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 98 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 15 × 98 = 1470,
81/15 = 81 × 98/15 × 98 = 7938/1470 - Likewise, for the 2nd fraction, since 98 × 15 = 1470,
42/98 = 42 × 15/98 × 15 = 630/1470 - Add the two like fractions:
7938/1470 + 630/1470 = 7938 + 630/1470 = 8568/1470 - 8568/1470 simplified gives 204/35
- So, 81/15 + 42/98 = 204/35
In mixed form: 529/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/15+84/98 81/30+42/98 81/45+42/98 81/75+42/98