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Add 12/28 and 40/72

12/28 + 40/72 is 62/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 28 × 18 = 504,
    12/28 = 12 × 18/28 × 18 = 216/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    40/72 = 40 × 7/72 × 7 = 280/504
  4. Add the two like fractions:
    216/504 + 280/504 = 216 + 280/504 = 496/504
  5. 496/504 simplified gives 62/63
  6. So, 12/28 + 40/72 = 62/63

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