Add 12/21 and 48/81
12/21 + 48/81 is 220/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 21 × 27 = 567,
12/21 = 12 × 27/21 × 27 = 324/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
48/81 = 48 × 7/81 × 7 = 336/567 - Add the two like fractions:
324/567 + 336/567 = 324 + 336/567 = 660/567 - 660/567 simplified gives 220/189
- So, 12/21 + 48/81 = 220/189
In mixed form: 131/189
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