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Add 20/42 and 49/63

20/42 + 49/63 is 79/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 63 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    20/42 = 20 × 3/42 × 3 = 60/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    49/63 = 49 × 2/63 × 2 = 98/126
  4. Add the two like fractions:
    60/126 + 98/126 = 60 + 98/126 = 158/126
  5. 158/126 simplified gives 79/63
  6. So, 20/42 + 49/63 = 79/63
    In mixed form: 116/63

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