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Add 21/35 and 63/20

1st number: 21/35, 2nd number: 3 3/20

21/35 + 63/20 is 15/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 35 × 4 = 140,
    21/35 = 21 × 4/35 × 4 = 84/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    63/20 = 63 × 7/20 × 7 = 441/140
  4. Add the two like fractions:
    84/140 + 441/140 = 84 + 441/140 = 525/140
  5. 525/140 simplified gives 15/4
  6. So, 21/35 + 63/20 = 15/4
    In mixed form: 33/4

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