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Add 20/63 and 7/72

20/63 + 7/72 is 209/504.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 72 is 504
  2. For the 1st fraction, since 63 × 8 = 504,
    20/63 = 20 × 8/63 × 8 = 160/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    7/72 = 7 × 7/72 × 7 = 49/504
  4. Add the two fractions:
    160/504 + 49/504 = 160 + 49/504 = 209/504

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