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Add 15/80 and 40/45

15/80 + 40/45 is 155/144.

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,
    15/80 = 15 × 9/80 × 9 = 135/720
  3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
    40/45 = 40 × 16/45 × 16 = 640/720
  4. Add the two like fractions:
    135/720 + 640/720 = 135 + 640/720 = 775/720
  5. 775/720 simplified gives 155/144
  6. So, 15/80 + 40/45 = 155/144
    In mixed form: 111/144

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