Add 21/81 and 72/49
1st number: 21/81, 2nd number: 1 23/49
21/81 + 72/49 is 2287/1323.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 49 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 81 × 49 = 3969,
21/81 = 21 × 49/81 × 49 = 1029/3969 - Likewise, for the 2nd fraction, since 49 × 81 = 3969,
72/49 = 72 × 81/49 × 81 = 5832/3969 - Add the two like fractions:
1029/3969 + 5832/3969 = 1029 + 5832/3969 = 6861/3969 - 6861/3969 simplified gives 2287/1323
- So, 21/81 + 72/49 = 2287/1323
In mixed form: 1964/1323
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