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Add 21/28 and 42/20

1st number: 21/28, 2nd number: 2 2/20

21/28 + 42/20 is 57/20.

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,
    21/28 = 21 × 5/28 × 5 = 105/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    42/20 = 42 × 7/20 × 7 = 294/140
  4. Add the two like fractions:
    105/140 + 294/140 = 105 + 294/140 = 399/140
  5. 399/140 simplified gives 57/20
  6. So, 21/28 + 42/20 = 57/20
    In mixed form: 217/20

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