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Add 28/70 and 1/80

28/70 + 1/80 is 33/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560
  2. For the 1st fraction, since 70 × 8 = 560,
    28/70 = 28 × 8/70 × 8 = 224/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    1/80 = 1 × 7/80 × 7 = 7/560
  4. Add the two fractions:
    224/560 + 7/560 = 224 + 7/560 = 231/560
  5. After reducing the fraction, the answer is 33/80

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