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Add 21/20 and 9/7

1st number: 1 1/20, 2nd number: 1 2/7

21/20 + 9/7 is 327/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    21/20 = 21 × 7/20 × 7 = 147/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    9/7 = 9 × 20/7 × 20 = 180/140
  4. Add the two like fractions:
    147/140 + 180/140 = 147 + 180/140 = 327/140
  5. So, 21/20 + 9/7 = 327/140
    In mixed form: 247/140

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