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Add 9/20 and 70/42

1st number: 9/20, 2nd number: 1 28/42

9/20 + 70/42 is 127/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 42 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    9/20 = 9 × 21/20 × 21 = 189/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    70/42 = 70 × 10/42 × 10 = 700/420
  4. Add the two like fractions:
    189/420 + 700/420 = 189 + 700/420 = 889/420
  5. 889/420 simplified gives 127/60
  6. So, 9/20 + 70/42 = 127/60
    In mixed form: 27/60

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