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Add 18/32 and 21/45

18/32 + 21/45 is 247/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 45 is 1440

    Next, find the equivalent fraction of both fractional numbers with denominator 1440
  2. For the 1st fraction, since 32 × 45 = 1440,
    18/32 = 18 × 45/32 × 45 = 810/1440
  3. Likewise, for the 2nd fraction, since 45 × 32 = 1440,
    21/45 = 21 × 32/45 × 32 = 672/1440
  4. Add the two like fractions:
    810/1440 + 672/1440 = 810 + 672/1440 = 1482/1440
  5. 1482/1440 simplified gives 247/240
  6. So, 18/32 + 21/45 = 247/240
    In mixed form: 17/240

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