Add 28/18 and 21/81
1st number: 1 10/18, 2nd number: 21/81
28/18 + 21/81 is 49/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
28/18 = 28 × 9/18 × 9 = 252/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
21/81 = 21 × 2/81 × 2 = 42/162 - Add the two like fractions:
252/162 + 42/162 = 252 + 42/162 = 294/162 - 294/162 simplified gives 49/27
- So, 28/18 + 21/81 = 49/27
In mixed form: 122/27
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