Add 7/42 and 6/81
7/42 + 6/81 is 13/54.
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,
7/42 = 7 × 27/42 × 27 = 189/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
6/81 = 6 × 14/81 × 14 = 84/1134 - Add the two like fractions:
189/1134 + 84/1134 = 189 + 84/1134 = 273/1134 - 273/1134 simplified gives 13/54
- So, 7/42 + 6/81 = 13/54
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