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Add 21/5 and 28/18

1st number: 4 1/5, 2nd number: 1 10/18

21/5 + 28/18 is 259/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 5 × 18 = 90,
    21/5 = 21 × 18/5 × 18 = 378/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    28/18 = 28 × 5/18 × 5 = 140/90
  4. Add the two like fractions:
    378/90 + 140/90 = 378 + 140/90 = 518/90
  5. 518/90 simplified gives 259/45
  6. So, 21/5 + 28/18 = 259/45
    In mixed form: 534/45

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