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Add 60/20 and 70/21

1st number: 3 0/20, 2nd number: 3 7/21

60/20 + 70/21 is 19/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 21 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    60/20 = 60 × 21/20 × 21 = 1260/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    70/21 = 70 × 20/21 × 20 = 1400/420
  4. Add the two fractions:
    1260/420 + 1400/420 = 1260 + 1400/420 = 2660/420
  5. 2660/420 simplified gives 19/3
  6. So, 60/20 + 70/21 = 19/3
    In mixed form: 61/3

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