Add 30/81 and 9/21
30/81 + 9/21 is 151/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 21 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
30/81 = 30 × 7/81 × 7 = 210/567 - Likewise, for the 2nd fraction, since 21 × 27 = 567,
9/21 = 9 × 27/21 × 27 = 243/567 - Add the two like fractions:
210/567 + 243/567 = 210 + 243/567 = 453/567 - 453/567 simplified gives 151/189
- So, 30/81 + 9/21 = 151/189
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