Add 20/36 and 81/72
1st number: 20/36, 2nd number: 1 9/72
20/36 + 81/72 is 121/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
20/36 = 20 × 2/36 × 2 = 40/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Add the two like fractions:
40/72 + 81/72 = 40 + 81/72 = 121/72 - So, 20/36 + 81/72 = 121/72
In mixed form: 149/72
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