Add 12/5 and 81/20
1st number: 2 2/5, 2nd number: 4 1/20
12/5 + 81/20 is 129/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
12/5 = 12 × 4/5 × 4 = 48/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
81/20 = 81 × 1/20 × 1 = 81/20 - Add the two like fractions:
48/20 + 81/20 = 48 + 81/20 = 129/20 - So, 12/5 + 81/20 = 129/20
In mixed form: 69/20
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