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Add 3/54 and 7/21

3/54 + 7/21 is 7/18.

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,
    3/54 = 3 × 7/54 × 7 = 21/378
  3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
    7/21 = 7 × 18/21 × 18 = 126/378
  4. Add the two like fractions:
    21/378 + 126/378 = 21 + 126/378 = 147/378
  5. 147/378 simplified gives 7/18
  6. So, 3/54 + 7/21 = 7/18

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