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Add 21/20 and 18/63

1st number: 1 1/20, 2nd number: 18/63

21/20 + 18/63 is 187/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 63 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 20 × 63 = 1260,
    21/20 = 21 × 63/20 × 63 = 1323/1260
  3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
    18/63 = 18 × 20/63 × 20 = 360/1260
  4. Add the two like fractions:
    1323/1260 + 360/1260 = 1323 + 360/1260 = 1683/1260
  5. 1683/1260 simplified gives 187/140
  6. So, 21/20 + 18/63 = 187/140
    In mixed form: 147/140

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