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Add 8/72 and 3/21

8/72 + 3/21 is 16/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 21 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    8/72 = 8 × 7/72 × 7 = 56/504
  3. Likewise, for the 2nd fraction, since 21 × 24 = 504,
    3/21 = 3 × 24/21 × 24 = 72/504
  4. Add the two like fractions:
    56/504 + 72/504 = 56 + 72/504 = 128/504
  5. 128/504 simplified gives 16/63
  6. So, 8/72 + 3/21 = 16/63

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