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Add 12/80 and 70/45

1st number: 12/80, 2nd number: 1 25/45

12/80 + 70/45 is 307/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 45 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    12/80 = 12 × 9/80 × 9 = 108/720
  3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
    70/45 = 70 × 16/45 × 16 = 1120/720
  4. Add the two like fractions:
    108/720 + 1120/720 = 108 + 1120/720 = 1228/720
  5. 1228/720 simplified gives 307/180
  6. So, 12/80 + 70/45 = 307/180
    In mixed form: 1127/180

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