Add 30/81 and 21/56
30/81 + 21/56 is 161/216.
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,
30/81 = 30 × 56/81 × 56 = 1680/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
21/56 = 21 × 81/56 × 81 = 1701/4536 - Add the two like fractions:
1680/4536 + 1701/4536 = 1680 + 1701/4536 = 3381/4536 - 3381/4536 simplified gives 161/216
- So, 30/81 + 21/56 = 161/216
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