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Add 20/8 and 42/80

1st number: 2 4/8, 2nd number: 42/80

20/8 + 42/80 is 121/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 80 is 80
  2. For the 1st fraction, since 8 × 10 = 80,
    20/8 = 20 × 10/8 × 10 = 200/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    42/80 = 42 × 1/80 × 1 = 42/80
  4. Add the two fractions:
    200/80 + 42/80 = 200 + 42/80 = 242/80
  5. After reducing the fraction, the answer is 121/40
  6. In mixed form: 31/40

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