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Add 3/42 and 18/72

3/42 + 18/72 is 9/28.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 42 × 12 = 504,
    3/42 = 3 × 12/42 × 12 = 36/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    18/72 = 18 × 7/72 × 7 = 126/504
  4. Add the two like fractions:
    36/504 + 126/504 = 36 + 126/504 = 162/504
  5. 162/504 simplified gives 9/28
  6. So, 3/42 + 18/72 = 9/28

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