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Add 21/27 and 10/20

21/27 + 10/20 is 23/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 20 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 27 × 20 = 540,
    21/27 = 21 × 20/27 × 20 = 420/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    10/20 = 10 × 27/20 × 27 = 270/540
  4. Add the two like fractions:
    420/540 + 270/540 = 420 + 270/540 = 690/540
  5. 690/540 simplified gives 23/18
  6. So, 21/27 + 10/20 = 23/18
    In mixed form: 15/18

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