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Add 45/63 and 20/54

45/63 + 20/54 is 205/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 54 is 378
  2. For the 1st fraction, since 63 × 6 = 378,
    45/63 = 45 × 6/63 × 6 = 270/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    20/54 = 20 × 7/54 × 7 = 140/378
  4. Add the two fractions:
    270/378 + 140/378 = 270 + 140/378 = 410/378
  5. 410/378 simplified gives 205/189
  6. So, 45/63 + 20/54 = 205/189
    In mixed form: 116/189

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