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Add 40/63 and 27/70

40/63 + 27/70 is 643/630.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 70 is 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 70 × 9 = 630,
    27/70 = 27 × 9/70 × 9 = 243/630
  4. Add the two fractions:
    400/630 + 243/630 = 400 + 243/630 = 643/630
  5. In mixed form: 113/630

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