Add 1/81 and 21/98
1/81 + 21/98 is 257/1134.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 98 is 7938
Next, find the equivalent fraction of both fractional numbers with denominator 7938 - For the 1st fraction, since 81 × 98 = 7938,
1/81 = 1 × 98/81 × 98 = 98/7938 - Likewise, for the 2nd fraction, since 98 × 81 = 7938,
21/98 = 21 × 81/98 × 81 = 1701/7938 - Add the two like fractions:
98/7938 + 1701/7938 = 98 + 1701/7938 = 1799/7938 - 1799/7938 simplified gives 257/1134
- So, 1/81 + 21/98 = 257/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/81+21/98 1/81+42/98 3/81+21/98 1/81+63/98 5/81+21/98 7/81+21/98