Add 15/81 and 2/7
15/81 + 2/7 is 89/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 7 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
15/81 = 15 × 7/81 × 7 = 105/567 - Likewise, for the 2nd fraction, since 7 × 81 = 567,
2/7 = 2 × 81/7 × 81 = 162/567 - Add the two like fractions:
105/567 + 162/567 = 105 + 162/567 = 267/567 - 267/567 simplified gives 89/189
- So, 15/81 + 2/7 = 89/189
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