Add 20/5 and 81/12
1st number: 4 0/5, 2nd number: 6 9/12
20/5 + 81/12 is 43/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
20/5 = 20 × 12/5 × 12 = 240/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
81/12 = 81 × 5/12 × 5 = 405/60 - Add the two like fractions:
240/60 + 405/60 = 240 + 405/60 = 645/60 - 645/60 simplified gives 43/4
- So, 20/5 + 81/12 = 43/4
In mixed form: 103/4
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