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Add 30/54 and 21/63

30/54 + 21/63 is 8/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 63 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 54 × 7 = 378,
    30/54 = 30 × 7/54 × 7 = 210/378
  3. Likewise, for the 2nd fraction, since 63 × 6 = 378,
    21/63 = 21 × 6/63 × 6 = 126/378
  4. Add the two like fractions:
    210/378 + 126/378 = 210 + 126/378 = 336/378
  5. 336/378 simplified gives 8/9
  6. So, 30/54 + 21/63 = 8/9

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