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Add 20/42 and 10/7

1st number: 20/42, 2nd number: 1 3/7

20/42 + 10/7 is 40/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 7 is 42
  2. For the 1st fraction, since 42 × 1 = 42,
    20/42 = 20 × 1/42 × 1 = 20/42
  3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
    10/7 = 10 × 6/7 × 6 = 60/42
  4. Add the two fractions:
    20/42 + 60/42 = 20 + 60/42 = 80/42
  5. 80/42 simplified gives 40/21
  6. So, 20/42 + 10/7 = 40/21
    In mixed form: 119/21

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