Add 3/20 and 72/81
3/20 + 72/81 is 187/180.
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,
3/20 = 3 × 81/20 × 81 = 243/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
72/81 = 72 × 20/81 × 20 = 1440/1620 - Add the two like fractions:
243/1620 + 1440/1620 = 243 + 1440/1620 = 1683/1620 - 1683/1620 simplified gives 187/180
- So, 3/20 + 72/81 = 187/180
In mixed form: 17/180
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