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Add 18/7 and 9/20

1st number: 2 4/7, 2nd number: 9/20

18/7 + 9/20 is 423/140.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 7 × 20 = 140,
    18/7 = 18 × 20/7 × 20 = 360/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    9/20 = 9 × 7/20 × 7 = 63/140
  4. Add the two like fractions:
    360/140 + 63/140 = 360 + 63/140 = 423/140
  5. So, 18/7 + 9/20 = 423/140
    In mixed form: 33/140

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