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Add 21/18 and 40/84

1st number: 1 3/18, 2nd number: 40/84

21/18 + 40/84 is 23/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 84 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 18 × 14 = 252,
    21/18 = 21 × 14/18 × 14 = 294/252
  3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
    40/84 = 40 × 3/84 × 3 = 120/252
  4. Add the two like fractions:
    294/252 + 120/252 = 294 + 120/252 = 414/252
  5. 414/252 simplified gives 23/14
  6. So, 21/18 + 40/84 = 23/14
    In mixed form: 19/14

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