Add 18/81 and 20/42
18/81 + 20/42 is 44/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
18/81 = 18 × 14/81 × 14 = 252/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
20/42 = 20 × 27/42 × 27 = 540/1134 - Add the two like fractions:
252/1134 + 540/1134 = 252 + 540/1134 = 792/1134 - 792/1134 simplified gives 44/63
- So, 18/81 + 20/42 = 44/63
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