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Add 72/16 and 84/20

1st number: 4 8/16, 2nd number: 4 4/20

72/16 + 84/20 is 87/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 20 is 80
  2. For the 1st fraction, since 16 × 5 = 80,
    72/16 = 72 × 5/16 × 5 = 360/80
  3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
    84/20 = 84 × 4/20 × 4 = 336/80
  4. Add the two fractions:
    360/80 + 336/80 = 360 + 336/80 = 696/80
  5. 696/80 simplified gives 87/10
  6. So, 72/16 + 84/20 = 87/10
    In mixed form: 87/10

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