Add 12/81 and 45/20
1st number: 12/81, 2nd number: 2 5/20
12/81 + 45/20 is 259/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
12/81 = 12 × 20/81 × 20 = 240/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
45/20 = 45 × 81/20 × 81 = 3645/1620 - Add the two like fractions:
240/1620 + 3645/1620 = 240 + 3645/1620 = 3885/1620 - 3885/1620 simplified gives 259/108
- So, 12/81 + 45/20 = 259/108
In mixed form: 243/108
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