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Add 72/80 and 7/4

1st number: 72/80, 2nd number: 1 3/4

72/80 + 7/4 is 53/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 4 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    72/80 = 72 × 1/80 × 1 = 72/80
  3. Likewise, for the 2nd fraction, since 4 × 20 = 80,
    7/4 = 7 × 20/4 × 20 = 140/80
  4. Add the two like fractions:
    72/80 + 140/80 = 72 + 140/80 = 212/80
  5. 212/80 simplified gives 53/20
  6. So, 72/80 + 7/4 = 53/20
    In mixed form: 213/20

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