Add 81/12 and 20/18
1st number: 6 9/12, 2nd number: 1 2/18
81/12 + 20/18 is 283/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
81/12 = 81 × 3/12 × 3 = 243/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
20/18 = 20 × 2/18 × 2 = 40/36 - Add the two like fractions:
243/36 + 40/36 = 243 + 40/36 = 283/36 - So, 81/12 + 20/18 = 283/36
In mixed form: 731/36
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