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Add 9/25 and 21/72

9/25 + 21/72 is 391/600.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 72 is 1800

    Next, find the equivalent fraction of both fractional numbers with denominator 1800
  2. For the 1st fraction, since 25 × 72 = 1800,
    9/25 = 9 × 72/25 × 72 = 648/1800
  3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
    21/72 = 21 × 25/72 × 25 = 525/1800
  4. Add the two like fractions:
    648/1800 + 525/1800 = 648 + 525/1800 = 1173/1800
  5. 1173/1800 simplified gives 391/600
  6. So, 9/25 + 21/72 = 391/600

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