Add 28/42 and 15/81
28/42 + 15/81 is 23/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
28/42 = 28 × 27/42 × 27 = 756/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
15/81 = 15 × 14/81 × 14 = 210/1134 - Add the two like fractions:
756/1134 + 210/1134 = 756 + 210/1134 = 966/1134 - 966/1134 simplified gives 23/27
- So, 28/42 + 15/81 = 23/27
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