Add 28/81 and 15/30
28/81 + 15/30 is 137/162.
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,
28/81 = 28 × 10/81 × 10 = 280/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
15/30 = 15 × 27/30 × 27 = 405/810 - Add the two like fractions:
280/810 + 405/810 = 280 + 405/810 = 685/810 - 685/810 simplified gives 137/162
- So, 28/81 + 15/30 = 137/162
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