Add 20/81 and 7/36
20/81 + 7/36 is 143/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 36 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
20/81 = 20 × 4/81 × 4 = 80/324 - Likewise, for the 2nd fraction, since 36 × 9 = 324,
7/36 = 7 × 9/36 × 9 = 63/324 - Add the two like fractions:
80/324 + 63/324 = 80 + 63/324 = 143/324 - So, 20/81 + 7/36 = 143/324
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