Add 21/81 and 5/10
21/81 + 5/10 is 41/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 10 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 10 × 81 = 810,
5/10 = 5 × 81/10 × 81 = 405/810 - Add the two like fractions:
210/810 + 405/810 = 210 + 405/810 = 615/810 - 615/810 simplified gives 41/54
- So, 21/81 + 5/10 = 41/54
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