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Add 42/6 and 21/20

1st number: 7 0/6, 2nd number: 1 1/20

42/6 + 21/20 is 161/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 20 is 60
  2. For the 1st fraction, since 6 × 10 = 60,
    42/6 = 42 × 10/6 × 10 = 420/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    21/20 = 21 × 3/20 × 3 = 63/60
  4. Add the two fractions:
    420/60 + 63/60 = 420 + 63/60 = 483/60
  5. 483/60 simplified gives 161/20
  6. So, 42/6 + 21/20 = 161/20
    In mixed form: 81/20

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