Add 45/81 and 15/20
45/81 + 15/20 is 47/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
45/81 = 45 × 20/81 × 20 = 900/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
15/20 = 15 × 81/20 × 81 = 1215/1620 - Add the two like fractions:
900/1620 + 1215/1620 = 900 + 1215/1620 = 2115/1620 - 2115/1620 simplified gives 47/36
- So, 45/81 + 15/20 = 47/36
In mixed form: 111/36
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