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Add 12/7 and 42/20

1st number: 1 5/7, 2nd number: 2 2/20

12/7 + 42/20 is 267/70.

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,
    12/7 = 12 × 20/7 × 20 = 240/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    42/20 = 42 × 7/20 × 7 = 294/140
  4. Add the two like fractions:
    240/140 + 294/140 = 240 + 294/140 = 534/140
  5. 534/140 simplified gives 267/70
  6. So, 12/7 + 42/20 = 267/70
    In mixed form: 357/70

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