Add 5/7 and 21/81
5/7 + 21/81 is 184/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
5/7 = 5 × 81/7 × 81 = 405/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
21/81 = 21 × 7/81 × 7 = 147/567 - Add the two like fractions:
405/567 + 147/567 = 405 + 147/567 = 552/567 - 552/567 simplified gives 184/189
- So, 5/7 + 21/81 = 184/189
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