Add 21/56 and 1/81
21/56 + 1/81 is 251/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
21/56 = 21 × 81/56 × 81 = 1701/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
1/81 = 1 × 56/81 × 56 = 56/4536 - Add the two like fractions:
1701/4536 + 56/4536 = 1701 + 56/4536 = 1757/4536 - 1757/4536 simplified gives 251/648
- So, 21/56 + 1/81 = 251/648
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