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Add 21/5 and 84/45

1st number: 4 1/5, 2nd number: 1 39/45

21/5 + 84/45 is 91/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 45 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 5 × 9 = 45,
    21/5 = 21 × 9/5 × 9 = 189/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    84/45 = 84 × 1/45 × 1 = 84/45
  4. Add the two like fractions:
    189/45 + 84/45 = 189 + 84/45 = 273/45
  5. 273/45 simplified gives 91/15
  6. So, 21/5 + 84/45 = 91/15
    In mixed form: 61/15

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