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Add 81/21 and 1/10

1st number: 3 18/21, 2nd number: 1/10

81/21 + 1/10 is 277/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    81/21 = 81 × 10/21 × 10 = 810/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    1/10 = 1 × 21/10 × 21 = 21/210
  4. Add the two like fractions:
    810/210 + 21/210 = 810 + 21/210 = 831/210
  5. 831/210 simplified gives 277/70
  6. So, 81/21 + 1/10 = 277/70
    In mixed form: 367/70

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