Add 49/21 and 42/81
1st number: 2 7/21, 2nd number: 42/81
49/21 + 42/81 is 77/27.
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,
49/21 = 49 × 27/21 × 27 = 1323/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
42/81 = 42 × 7/81 × 7 = 294/567 - Add the two like fractions:
1323/567 + 294/567 = 1323 + 294/567 = 1617/567 - 1617/567 simplified gives 77/27
- So, 49/21 + 42/81 = 77/27
In mixed form: 223/27
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