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Add 20/5 and 42/80

1st number: 4 0/5, 2nd number: 42/80

20/5 + 42/80 is 181/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 80 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 5 × 16 = 80,
    20/5 = 20 × 16/5 × 16 = 320/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    42/80 = 42 × 1/80 × 1 = 42/80
  4. Add the two like fractions:
    320/80 + 42/80 = 320 + 42/80 = 362/80
  5. 362/80 simplified gives 181/40
  6. So, 20/5 + 42/80 = 181/40
    In mixed form: 421/40

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