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Add 15/35 and 63/80

15/35 + 63/80 is 681/560.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 80 is 560
  2. For the 1st fraction, since 35 × 16 = 560,
    15/35 = 15 × 16/35 × 16 = 240/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    63/80 = 63 × 7/80 × 7 = 441/560
  4. Add the two fractions:
    240/560 + 441/560 = 240 + 441/560 = 681/560
  5. In mixed form: 1121/560

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