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Add 72/80 and 42/20

1st number: 72/80, 2nd number: 2 2/20

72/80 + 42/20 is 3/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 20 is 80
  2. For the 1st fraction, since 80 × 1 = 80,
    72/80 = 72 × 1/80 × 1 = 72/80
  3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
    42/20 = 42 × 4/20 × 4 = 168/80
  4. Add the two fractions:
    72/80 + 168/80 = 72 + 168/80 = 240/80
  5. 240/80 simplified gives 3/1
  6. So, 72/80 + 42/20 = 3/1

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