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Add 84/10 and 20/72

1st number: 8 4/10, 2nd number: 20/72

84/10 + 20/72 is 781/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 10 × 36 = 360,
    84/10 = 84 × 36/10 × 36 = 3024/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  4. Add the two like fractions:
    3024/360 + 100/360 = 3024 + 100/360 = 3124/360
  5. 3124/360 simplified gives 781/90
  6. So, 84/10 + 20/72 = 781/90
    In mixed form: 861/90

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