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Add 42/28 and 15/20

1st number: 1 14/28, 2nd number: 15/20

42/28 + 15/20 is 9/4.

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,
    42/28 = 42 × 5/28 × 5 = 210/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    15/20 = 15 × 7/20 × 7 = 105/140
  4. Add the two like fractions:
    210/140 + 105/140 = 210 + 105/140 = 315/140
  5. 315/140 simplified gives 9/4
  6. So, 42/28 + 15/20 = 9/4
    In mixed form: 21/4

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