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Add 7/40 and 18/63

7/40 + 18/63 is 129/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 63 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 40 × 63 = 2520,
    7/40 = 7 × 63/40 × 63 = 441/2520
  3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
    18/63 = 18 × 40/63 × 40 = 720/2520
  4. Add the two like fractions:
    441/2520 + 720/2520 = 441 + 720/2520 = 1161/2520
  5. 1161/2520 simplified gives 129/280
  6. So, 7/40 + 18/63 = 129/280

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