Add 7/84 and 3/81
7/84 + 3/81 is 13/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
7/84 = 7 × 27/84 × 27 = 189/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
3/81 = 3 × 28/81 × 28 = 84/2268 - Add the two like fractions:
189/2268 + 84/2268 = 189 + 84/2268 = 273/2268 - 273/2268 simplified gives 13/108
- So, 7/84 + 3/81 = 13/108
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