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Add 28/40 and 42/50

28/40 + 42/50 is 77/50.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 50 is 200
  2. For the 1st fraction, since 40 × 5 = 200,
    28/40 = 28 × 5/40 × 5 = 140/200
  3. Likewise, for the 2nd fraction, since 50 × 4 = 200,
    42/50 = 42 × 4/50 × 4 = 168/200
  4. Add the two fractions:
    140/200 + 168/200 = 140 + 168/200 = 308/200
  5. 308/200 simplified gives 77/50
  6. So, 28/40 + 42/50 = 77/50
    In mixed form: 127/50

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