Add 81/20 and 40/15
1st number: 4 1/20, 2nd number: 2 10/15
81/20 + 40/15 is 403/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
40/15 = 40 × 4/15 × 4 = 160/60 - Add the two like fractions:
243/60 + 160/60 = 243 + 160/60 = 403/60 - So, 81/20 + 40/15 = 403/60
In mixed form: 643/60
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