Add 9/81 and 4/20
9/81 + 4/20 is 14/45.
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,
9/81 = 9 × 20/81 × 20 = 180/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
4/20 = 4 × 81/20 × 81 = 324/1620 - Add the two like fractions:
180/1620 + 324/1620 = 180 + 324/1620 = 504/1620 - 504/1620 simplified gives 14/45
- So, 9/81 + 4/20 = 14/45
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