Add 21/81 and 9/30
21/81 + 9/30 is 151/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 30 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
21/81 = 21 × 10/81 × 10 = 210/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
9/30 = 9 × 27/30 × 27 = 243/810 - Add the two like fractions:
210/810 + 243/810 = 210 + 243/810 = 453/810 - 453/810 simplified gives 151/270
- So, 21/81 + 9/30 = 151/270
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