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Add 81/90 and 10/42

81/90 + 10/42 is 239/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 42 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    81/90 = 81 × 7/90 × 7 = 567/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    10/42 = 10 × 15/42 × 15 = 150/630
  4. Add the two like fractions:
    567/630 + 150/630 = 567 + 150/630 = 717/630
  5. 717/630 simplified gives 239/210
  6. So, 81/90 + 10/42 = 239/210
    In mixed form: 129/210

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