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Add 15/28 and 45/80

15/28 + 45/80 is 123/112.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 80 is 560
  2. For the 1st fraction, since 28 × 20 = 560,
    15/28 = 15 × 20/28 × 20 = 300/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    45/80 = 45 × 7/80 × 7 = 315/560
  4. Add the two fractions:
    300/560 + 315/560 = 300 + 315/560 = 615/560
  5. 615/560 simplified gives 123/112
  6. So, 15/28 + 45/80 = 123/112
    In mixed form: 111/112

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