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Add 28/42 and 40/72

28/42 + 40/72 is 11/9.

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,
    28/42 = 28 × 12/42 × 12 = 336/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    40/72 = 40 × 7/72 × 7 = 280/504
  4. Add the two like fractions:
    336/504 + 280/504 = 336 + 280/504 = 616/504
  5. 616/504 simplified gives 11/9
  6. So, 28/42 + 40/72 = 11/9
    In mixed form: 12/9

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