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Add 84/4 and 72/5

1st number: 21 0/4, 2nd number: 14 2/5

84/4 + 72/5 is 177/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    84/4 = 84 × 5/4 × 5 = 420/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    72/5 = 72 × 4/5 × 4 = 288/20
  4. Add the two like fractions:
    420/20 + 288/20 = 420 + 288/20 = 708/20
  5. 708/20 simplified gives 177/5
  6. So, 84/4 + 72/5 = 177/5
    In mixed form: 352/5

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