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Add 15/90 and 63/80

15/90 + 63/80 is 229/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    15/90 = 15 × 8/90 × 8 = 120/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    63/80 = 63 × 9/80 × 9 = 567/720
  4. Add the two like fractions:
    120/720 + 567/720 = 120 + 567/720 = 687/720
  5. 687/720 simplified gives 229/240
  6. So, 15/90 + 63/80 = 229/240

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