Add 20/30 and 21/81
20/30 + 21/81 is 25/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
20/30 = 20 × 27/30 × 27 = 540/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
21/81 = 21 × 10/81 × 10 = 210/810 - Add the two like fractions:
540/810 + 210/810 = 540 + 210/810 = 750/810 - 750/810 simplified gives 25/27
- So, 20/30 + 21/81 = 25/27
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