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Add 54/63 and 20/80

54/63 + 20/80 is 31/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 80 is 5040

    Next, find the equivalent fraction of both fractional numbers with denominator 5040
  2. For the 1st fraction, since 63 × 80 = 5040,
    54/63 = 54 × 80/63 × 80 = 4320/5040
  3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
    20/80 = 20 × 63/80 × 63 = 1260/5040
  4. Add the two like fractions:
    4320/5040 + 1260/5040 = 4320 + 1260/5040 = 5580/5040
  5. 5580/5040 simplified gives 31/28
  6. So, 54/63 + 20/80 = 31/28
    In mixed form: 13/28

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