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Add 15/72 and 21/75

15/72 + 21/75 is 293/600.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 75 is 1800

    Next, find the equivalent fraction of both fractional numbers with denominator 1800
  2. For the 1st fraction, since 72 × 25 = 1800,
    15/72 = 15 × 25/72 × 25 = 375/1800
  3. Likewise, for the 2nd fraction, since 75 × 24 = 1800,
    21/75 = 21 × 24/75 × 24 = 504/1800
  4. Add the two like fractions:
    375/1800 + 504/1800 = 375 + 504/1800 = 879/1800
  5. 879/1800 simplified gives 293/600
  6. So, 15/72 + 21/75 = 293/600

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