Add 18/12 and 81/20
1st number: 1 6/12, 2nd number: 4 1/20
18/12 + 81/20 is 111/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Add the two like fractions:
90/60 + 243/60 = 90 + 243/60 = 333/60 - 333/60 simplified gives 111/20
- So, 18/12 + 81/20 = 111/20
In mixed form: 511/20
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