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Add 10/72 and 9/42

10/72 + 9/42 is 89/252.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 42 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    10/72 = 10 × 7/72 × 7 = 70/504
  3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
    9/42 = 9 × 12/42 × 12 = 108/504
  4. Add the two like fractions:
    70/504 + 108/504 = 70 + 108/504 = 178/504
  5. 178/504 simplified gives 89/252
  6. So, 10/72 + 9/42 = 89/252

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