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Add 42/20 and 30/80

1st number: 2 2/20, 2nd number: 30/80

42/20 + 30/80 is 99/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 80 is 80
  2. For the 1st fraction, since 20 × 4 = 80,
    42/20 = 42 × 4/20 × 4 = 168/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    30/80 = 30 × 1/80 × 1 = 30/80
  4. Add the two fractions:
    168/80 + 30/80 = 168 + 30/80 = 198/80
  5. After reducing the fraction, the answer is 99/40
  6. In mixed form: 219/40

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