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Add 3/72 and 21/63

3/72 + 21/63 is 3/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 63 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    3/72 = 3 × 7/72 × 7 = 21/504
  3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
    21/63 = 21 × 8/63 × 8 = 168/504
  4. Add the two like fractions:
    21/504 + 168/504 = 21 + 168/504 = 189/504
  5. 189/504 simplified gives 3/8
  6. So, 3/72 + 21/63 = 3/8

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