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Add 42/7 and 9/20

1st number: 6 0/7, 2nd number: 9/20

42/7 + 9/20 is 129/20.

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,
    42/7 = 42 × 20/7 × 20 = 840/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    9/20 = 9 × 7/20 × 7 = 63/140
  4. Add the two like fractions:
    840/140 + 63/140 = 840 + 63/140 = 903/140
  5. 903/140 simplified gives 129/20
  6. So, 42/7 + 9/20 = 129/20
    In mixed form: 69/20

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