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Add 9/21 and 63/20

1st number: 9/21, 2nd number: 3 3/20

9/21 + 63/20 is 501/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    9/21 = 9 × 20/21 × 20 = 180/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    63/20 = 63 × 21/20 × 21 = 1323/420
  4. Add the two like fractions:
    180/420 + 1323/420 = 180 + 1323/420 = 1503/420
  5. 1503/420 simplified gives 501/140
  6. So, 9/21 + 63/20 = 501/140
    In mixed form: 381/140

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