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Add 30/72 and 9/84

30/72 + 9/84 is 11/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 84 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    30/72 = 30 × 7/72 × 7 = 210/504
  3. Likewise, for the 2nd fraction, since 84 × 6 = 504,
    9/84 = 9 × 6/84 × 6 = 54/504
  4. Add the two like fractions:
    210/504 + 54/504 = 210 + 54/504 = 264/504
  5. 264/504 simplified gives 11/21
  6. So, 30/72 + 9/84 = 11/21

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