Add 81/15 and 20/18
1st number: 5 6/15, 2nd number: 1 2/18
81/15 + 20/18 is 293/45.
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,
20/18 = 20 × 5/18 × 5 = 100/90 - Add the two like fractions:
486/90 + 100/90 = 486 + 100/90 = 586/90 - 586/90 simplified gives 293/45
- So, 81/15 + 20/18 = 293/45
In mixed form: 623/45
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