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Add 28/35 and 25/40

28/35 + 25/40 is 57/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 40 is 280
  2. For the 1st fraction, since 35 × 8 = 280,
    28/35 = 28 × 8/35 × 8 = 224/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    25/40 = 25 × 7/40 × 7 = 175/280
  4. Add the two fractions:
    224/280 + 175/280 = 224 + 175/280 = 399/280
  5. 399/280 simplified gives 57/40
  6. So, 28/35 + 25/40 = 57/40
    In mixed form: 117/40

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