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Add 45/54 and 8/21

45/54 + 8/21 is 17/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 21 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 54 × 7 = 378,
    45/54 = 45 × 7/54 × 7 = 315/378
  3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
    8/21 = 8 × 18/21 × 18 = 144/378
  4. Add the two like fractions:
    315/378 + 144/378 = 315 + 144/378 = 459/378
  5. 459/378 simplified gives 17/14
  6. So, 45/54 + 8/21 = 17/14
    In mixed form: 13/14

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