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Add 90/80 and 12/45

1st number: 1 10/80, 2nd number: 12/45

90/80 + 12/45 is 167/120.

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,
    90/80 = 90 × 9/80 × 9 = 810/720
  3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
    12/45 = 12 × 16/45 × 16 = 192/720
  4. Add the two like fractions:
    810/720 + 192/720 = 810 + 192/720 = 1002/720
  5. 1002/720 simplified gives 167/120
  6. So, 90/80 + 12/45 = 167/120
    In mixed form: 147/120

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