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Add 21/72 and 30/63

21/72 + 30/63 is 43/56.

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,
    21/72 = 21 × 7/72 × 7 = 147/504
  3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
    30/63 = 30 × 8/63 × 8 = 240/504
  4. Add the two like fractions:
    147/504 + 240/504 = 147 + 240/504 = 387/504
  5. 387/504 simplified gives 43/56
  6. So, 21/72 + 30/63 = 43/56

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