Add 45/15 and 20/81
1st number: 3 0/15, 2nd number: 20/81
45/15 + 20/81 is 263/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
45/15 = 45 × 27/15 × 27 = 1215/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
20/81 = 20 × 5/81 × 5 = 100/405 - Add the two like fractions:
1215/405 + 100/405 = 1215 + 100/405 = 1315/405 - 1315/405 simplified gives 263/81
- So, 45/15 + 20/81 = 263/81
In mixed form: 320/81
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