Add 18/56 and 20/81
18/56 + 20/81 is 1289/2268.
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,
18/56 = 18 × 81/56 × 81 = 1458/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
20/81 = 20 × 56/81 × 56 = 1120/4536 - Add the two like fractions:
1458/4536 + 1120/4536 = 1458 + 1120/4536 = 2578/4536 - 2578/4536 simplified gives 1289/2268
- So, 18/56 + 20/81 = 1289/2268
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