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Add 21/20 and 40/45

1st number: 1 1/20, 2nd number: 40/45

21/20 + 40/45 is 349/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 45 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 45 × 4 = 180,
    40/45 = 40 × 4/45 × 4 = 160/180
  4. Add the two like fractions:
    189/180 + 160/180 = 189 + 160/180 = 349/180
  5. So, 21/20 + 40/45 = 349/180
    In mixed form: 1169/180

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