Add 72/4 and 20/81
1st number: 18 0/4, 2nd number: 20/81
72/4 + 20/81 is 1478/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
72/4 = 72 × 81/4 × 81 = 5832/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
20/81 = 20 × 4/81 × 4 = 80/324 - Add the two like fractions:
5832/324 + 80/324 = 5832 + 80/324 = 5912/324 - 5912/324 simplified gives 1478/81
- So, 72/4 + 20/81 = 1478/81
In mixed form: 1820/81
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