Add 21/81 and 30/98
21/81 + 30/98 is 748/1323.
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,
21/81 = 21 × 98/81 × 98 = 2058/7938 - Likewise, for the 2nd fraction, since 98 × 81 = 7938,
30/98 = 30 × 81/98 × 81 = 2430/7938 - Add the two like fractions:
2058/7938 + 2430/7938 = 2058 + 2430/7938 = 4488/7938 - 4488/7938 simplified gives 748/1323
- So, 21/81 + 30/98 = 748/1323
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