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Add 21/20 and 12/27

1st number: 1 1/20, 2nd number: 12/27

21/20 + 12/27 is 269/180.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 20 × 27 = 540,
    21/20 = 21 × 27/20 × 27 = 567/540
  3. Likewise, for the 2nd fraction, since 27 × 20 = 540,
    12/27 = 12 × 20/27 × 20 = 240/540
  4. Add the two like fractions:
    567/540 + 240/540 = 567 + 240/540 = 807/540
  5. 807/540 simplified gives 269/180
  6. So, 21/20 + 12/27 = 269/180
    In mixed form: 189/180

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