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Add 81/90 and 30/63

81/90 + 30/63 is 289/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 63 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 63 × 10 = 630,
    30/63 = 30 × 10/63 × 10 = 300/630
  4. Add the two like fractions:
    567/630 + 300/630 = 567 + 300/630 = 867/630
  5. 867/630 simplified gives 289/210
  6. So, 81/90 + 30/63 = 289/210
    In mixed form: 179/210

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