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Add 30/20 and 70/42

1st number: 1 10/20, 2nd number: 1 28/42

30/20 + 70/42 is 19/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 42 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    30/20 = 30 × 21/20 × 21 = 630/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    70/42 = 70 × 10/42 × 10 = 700/420
  4. Add the two fractions:
    630/420 + 700/420 = 630 + 700/420 = 1330/420
  5. 1330/420 simplified gives 19/6
  6. So, 30/20 + 70/42 = 19/6
    In mixed form: 31/6

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