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Add 18/28 and 75/20

1st number: 18/28, 2nd number: 3 15/20

18/28 + 75/20 is 123/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    18/28 = 18 × 5/28 × 5 = 90/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    75/20 = 75 × 7/20 × 7 = 525/140
  4. Add the two like fractions:
    90/140 + 525/140 = 90 + 525/140 = 615/140
  5. 615/140 simplified gives 123/28
  6. So, 18/28 + 75/20 = 123/28
    In mixed form: 411/28

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