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Add 40/63 and 84/90

40/63 + 84/90 is 494/315.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 63 × 10 = 630,
    40/63 = 40 × 10/63 × 10 = 400/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    84/90 = 84 × 7/90 × 7 = 588/630
  4. Add the two like fractions:
    400/630 + 588/630 = 400 + 588/630 = 988/630
  5. 988/630 simplified gives 494/315
  6. So, 40/63 + 84/90 = 494/315
    In mixed form: 1179/315

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