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Add 28/35 and 70/80

28/35 + 70/80 is 67/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 35 × 16 = 560,
    28/35 = 28 × 16/35 × 16 = 448/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    70/80 = 70 × 7/80 × 7 = 490/560
  4. Add the two like fractions:
    448/560 + 490/560 = 448 + 490/560 = 938/560
  5. 938/560 simplified gives 67/40
  6. So, 28/35 + 70/80 = 67/40
    In mixed form: 127/40

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