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Add 28/20 and 42/25

1st number: 1 8/20, 2nd number: 1 17/25

28/20 + 42/25 is 77/25.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 25 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 20 × 5 = 100,
    28/20 = 28 × 5/20 × 5 = 140/100
  3. Likewise, for the 2nd fraction, since 25 × 4 = 100,
    42/25 = 42 × 4/25 × 4 = 168/100
  4. Add the two like fractions:
    140/100 + 168/100 = 140 + 168/100 = 308/100
  5. 308/100 simplified gives 77/25
  6. So, 28/20 + 42/25 = 77/25
    In mixed form: 32/25

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