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Add 24/42 and 40/90

24/42 + 40/90 is 64/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    24/42 = 24 × 15/42 × 15 = 360/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    40/90 = 40 × 7/90 × 7 = 280/630
  4. Add the two fractions:
    360/630 + 280/630 = 360 + 280/630 = 640/630
  5. After reducing the fraction, the answer is 64/63
  6. In mixed form: 11/63

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