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Add 28/10 and 21/18

1st number: 2 8/10, 2nd number: 1 3/18

28/10 + 21/18 is 119/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 10 × 9 = 90,
    28/10 = 28 × 9/10 × 9 = 252/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    21/18 = 21 × 5/18 × 5 = 105/90
  4. Add the two like fractions:
    252/90 + 105/90 = 252 + 105/90 = 357/90
  5. 357/90 simplified gives 119/30
  6. So, 28/10 + 21/18 = 119/30
    In mixed form: 329/30

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