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Add 28/70 and 3/80

28/70 + 3/80 is 7/16.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    3/80 = 3 × 7/80 × 7 = 21/560
  4. Add the two like fractions:
    224/560 + 21/560 = 224 + 21/560 = 245/560
  5. 245/560 simplified gives 7/16
  6. So, 28/70 + 3/80 = 7/16

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