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Add 28/20 and 90/56

1st number: 1 8/20, 2nd number: 1 34/56

28/20 + 90/56 is 421/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 56 is 280
  2. For the 1st fraction, since 20 × 14 = 280,
    28/20 = 28 × 14/20 × 14 = 392/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    90/56 = 90 × 5/56 × 5 = 450/280
  4. Add the two fractions:
    392/280 + 450/280 = 392 + 450/280 = 842/280
  5. 842/280 simplified gives 421/140
  6. So, 28/20 + 90/56 = 421/140
    In mixed form: 31/140

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