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Add 9/28 and 24/40

9/28 + 24/40 is 129/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 28 × 10 = 280,
    9/28 = 9 × 10/28 × 10 = 90/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    24/40 = 24 × 7/40 × 7 = 168/280
  4. Add the two like fractions:
    90/280 + 168/280 = 90 + 168/280 = 258/280
  5. 258/280 simplified gives 129/140
  6. So, 9/28 + 24/40 = 129/140

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