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Add 80/5 and 9/7

1st number: 16 0/5, 2nd number: 1 2/7

80/5 + 9/7 is 121/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 7 is 35

    Next, find the equivalent fraction of both fractional numbers with denominator 35
  2. For the 1st fraction, since 5 × 7 = 35,
    80/5 = 80 × 7/5 × 7 = 560/35
  3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
    9/7 = 9 × 5/7 × 5 = 45/35
  4. Add the two like fractions:
    560/35 + 45/35 = 560 + 45/35 = 605/35
  5. 605/35 simplified gives 121/7
  6. So, 80/5 + 9/7 = 121/7
    In mixed form: 172/7

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