Add 28/36 and 20/81
28/36 + 20/81 is 83/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 36 × 9 = 324,
28/36 = 28 × 9/36 × 9 = 252/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
20/81 = 20 × 4/81 × 4 = 80/324 - Add the two like fractions:
252/324 + 80/324 = 252 + 80/324 = 332/324 - 332/324 simplified gives 83/81
- So, 28/36 + 20/81 = 83/81
In mixed form: 12/81
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