Add 6/20 and 45/81
6/20 + 45/81 is 77/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 20 × 81 = 1620,
6/20 = 6 × 81/20 × 81 = 486/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
45/81 = 45 × 20/81 × 20 = 900/1620 - Add the two like fractions:
486/1620 + 900/1620 = 486 + 900/1620 = 1386/1620 - 1386/1620 simplified gives 77/90
- So, 6/20 + 45/81 = 77/90
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