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Add 8/42 and 54/72

8/42 + 54/72 is 79/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 72 is 504
  2. For the 1st fraction, since 42 × 12 = 504,
    8/42 = 8 × 12/42 × 12 = 96/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    54/72 = 54 × 7/72 × 7 = 378/504
  4. Add the two fractions:
    96/504 + 378/504 = 96 + 378/504 = 474/504
  5. After reducing the fraction, the answer is 79/84

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