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Add 21/20 and 20/18

1st number: 1 1/20, 2nd number: 1 2/18

21/20 + 20/18 is 389/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    21/20 = 21 × 9/20 × 9 = 189/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    20/18 = 20 × 10/18 × 10 = 200/180
  4. Add the two like fractions:
    189/180 + 200/180 = 189 + 200/180 = 389/180
  5. So, 21/20 + 20/18 = 389/180
    In mixed form: 229/180

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