Add 81/18 and 20/15
1st number: 4 9/18, 2nd number: 1 5/15
81/18 + 20/15 is 35/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Add the two like fractions:
405/90 + 120/90 = 405 + 120/90 = 525/90 - 525/90 simplified gives 35/6
- So, 81/18 + 20/15 = 35/6
In mixed form: 55/6
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