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Add 7/20 and 18/63

7/20 + 18/63 is 89/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 63 is 1260
  2. For the 1st fraction, since 20 × 63 = 1260,
    7/20 = 7 × 63/20 × 63 = 441/1260
  3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
    18/63 = 18 × 20/63 × 20 = 360/1260
  4. Add the two fractions:
    441/1260 + 360/1260 = 441 + 360/1260 = 801/1260
  5. After reducing the fraction, the answer is 89/140

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