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Add 42/72 and 3/84

42/72 + 3/84 is 13/21.

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,
    42/72 = 42 × 7/72 × 7 = 294/504
  3. Likewise, for the 2nd fraction, since 84 × 6 = 504,
    3/84 = 3 × 6/84 × 6 = 18/504
  4. Add the two like fractions:
    294/504 + 18/504 = 294 + 18/504 = 312/504
  5. 312/504 simplified gives 13/21
  6. So, 42/72 + 3/84 = 13/21

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