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Add 81/75 and 21/7

1st number: 1 6/75, 2nd number: 3 0/7

81/75 + 21/7 is 102/25.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 7 is 525

    Next, find the equivalent fraction of both fractional numbers with denominator 525
  2. For the 1st fraction, since 75 × 7 = 525,
    81/75 = 81 × 7/75 × 7 = 567/525
  3. Likewise, for the 2nd fraction, since 7 × 75 = 525,
    21/7 = 21 × 75/7 × 75 = 1575/525
  4. Add the two like fractions:
    567/525 + 1575/525 = 567 + 1575/525 = 2142/525
  5. 2142/525 simplified gives 102/25
  6. So, 81/75 + 21/7 = 102/25
    In mixed form: 42/25

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