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Add 30/60 and 70/21

1st number: 30/60, 2nd number: 3 7/21

30/60 + 70/21 is 23/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 21 is 420
  2. For the 1st fraction, since 60 × 7 = 420,
    30/60 = 30 × 7/60 × 7 = 210/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    70/21 = 70 × 20/21 × 20 = 1400/420
  4. Add the two fractions:
    210/420 + 1400/420 = 210 + 1400/420 = 1610/420
  5. 1610/420 simplified gives 23/6
  6. So, 30/60 + 70/21 = 23/6
    In mixed form: 35/6

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