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Add 40/63 and 45/70

40/63 + 45/70 is 23/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 70 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 70 × 9 = 630,
    45/70 = 45 × 9/70 × 9 = 405/630
  4. Add the two like fractions:
    400/630 + 405/630 = 400 + 405/630 = 805/630
  5. 805/630 simplified gives 23/18
  6. So, 40/63 + 45/70 = 23/18
    In mixed form: 15/18

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