Add 20/81 and 81/56
1st number: 20/81, 2nd number: 1 25/56
20/81 + 81/56 is 7681/4536.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 56 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 81 × 56 = 4536,
20/81 = 20 × 56/81 × 56 = 1120/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
81/56 = 81 × 81/56 × 81 = 6561/4536 - Add the two like fractions:
1120/4536 + 6561/4536 = 1120 + 6561/4536 = 7681/4536 - So, 20/81 + 81/56 = 7681/4536
In mixed form: 13145/4536
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