Add 21/27 and 15/49
21/27 + 15/49 is 478/441.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 49 is 1323
Next, find the equivalent fraction of both fractional numbers with denominator 1323 - For the 1st fraction, since 27 × 49 = 1323,
21/27 = 21 × 49/27 × 49 = 1029/1323 - Likewise, for the 2nd fraction, since 49 × 27 = 1323,
15/49 = 15 × 27/49 × 27 = 405/1323 - Add the two like fractions:
1029/1323 + 405/1323 = 1029 + 405/1323 = 1434/1323 - 1434/1323 simplified gives 478/441
- So, 21/27 + 15/49 = 478/441
In mixed form: 137/441
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