Add 15/81 and 3/42
15/81 + 3/42 is 97/378.
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,
15/81 = 15 × 14/81 × 14 = 210/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
3/42 = 3 × 27/42 × 27 = 81/1134 - Add the two like fractions:
210/1134 + 81/1134 = 210 + 81/1134 = 291/1134 - 291/1134 simplified gives 97/378
- So, 15/81 + 3/42 = 97/378
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