Add 28/81 and 2/10
28/81 + 2/10 is 221/405.
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,
28/81 = 28 × 10/81 × 10 = 280/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
2/10 = 2 × 81/10 × 81 = 162/810 - Add the two like fractions:
280/810 + 162/810 = 280 + 162/810 = 442/810 - 442/810 simplified gives 221/405
- So, 28/81 + 2/10 = 221/405
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