Add 21/49 and 3/81
21/49 + 3/81 is 88/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 81 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 49 × 81 = 3969,
21/49 = 21 × 81/49 × 81 = 1701/3969 - Likewise, for the 2nd fraction, since 81 × 49 = 3969,
3/81 = 3 × 49/81 × 49 = 147/3969 - Add the two like fractions:
1701/3969 + 147/3969 = 1701 + 147/3969 = 1848/3969 - 1848/3969 simplified gives 88/189
- So, 21/49 + 3/81 = 88/189
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