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Add 2/42 and 8/80

2/42 + 8/80 is 31/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 80 is 1680
  2. For the 1st fraction, since 42 × 40 = 1680,
    2/42 = 2 × 40/42 × 40 = 80/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    8/80 = 8 × 21/80 × 21 = 168/1680
  4. Add the two fractions:
    80/1680 + 168/1680 = 80 + 168/1680 = 248/1680
  5. After reducing the fraction, the answer is 31/210

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