Add 81/15 and 5/18
1st number: 5 6/15, 2nd number: 5/18
81/15 + 5/18 is 511/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
81/15 = 81 × 6/15 × 6 = 486/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
5/18 = 5 × 5/18 × 5 = 25/90 - Add the two like fractions:
486/90 + 25/90 = 486 + 25/90 = 511/90 - So, 81/15 + 5/18 = 511/90
In mixed form: 561/90
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