Add 7/81 and 4/42
7/81 + 4/42 is 103/567.
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,
7/81 = 7 × 14/81 × 14 = 98/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
4/42 = 4 × 27/42 × 27 = 108/1134 - Add the two like fractions:
98/1134 + 108/1134 = 98 + 108/1134 = 206/1134 - 206/1134 simplified gives 103/567
- So, 7/81 + 4/42 = 103/567
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