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Add 81/30 and 20/7

1st number: 2 21/30, 2nd number: 2 6/7

81/30 + 20/7 is 389/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 7 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    81/30 = 81 × 7/30 × 7 = 567/210
  3. Likewise, for the 2nd fraction, since 7 × 30 = 210,
    20/7 = 20 × 30/7 × 30 = 600/210
  4. Add the two like fractions:
    567/210 + 600/210 = 567 + 600/210 = 1167/210
  5. 1167/210 simplified gives 389/70
  6. So, 81/30 + 20/7 = 389/70
    In mixed form: 539/70

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