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Add 81/90 and 40/7

1st number: 81/90, 2nd number: 5 5/7

81/90 + 40/7 is 463/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 7 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 7 × 90 = 630,
    40/7 = 40 × 90/7 × 90 = 3600/630
  4. Add the two like fractions:
    567/630 + 3600/630 = 567 + 3600/630 = 4167/630
  5. 4167/630 simplified gives 463/70
  6. So, 81/90 + 40/7 = 463/70
    In mixed form: 643/70

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