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Add 5/42 and 8/40

5/42 + 8/40 is 67/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 40 is 840
  2. For the 1st fraction, since 42 × 20 = 840,
    5/42 = 5 × 20/42 × 20 = 100/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    8/40 = 8 × 21/40 × 21 = 168/840
  4. Add the two fractions:
    100/840 + 168/840 = 100 + 168/840 = 268/840
  5. After reducing the fraction, the answer is 67/210

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