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Add 30/7 and 42/20

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

30/7 + 42/20 is 447/70.

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,
    30/7 = 30 × 20/7 × 20 = 600/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    42/20 = 42 × 7/20 × 7 = 294/140
  4. Add the two like fractions:
    600/140 + 294/140 = 600 + 294/140 = 894/140
  5. 894/140 simplified gives 447/70
  6. So, 30/7 + 42/20 = 447/70
    In mixed form: 627/70

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