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Add 8/42 and 21/27

8/42 + 21/27 is 61/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 27 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 42 × 9 = 378,
    8/42 = 8 × 9/42 × 9 = 72/378
  3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
    21/27 = 21 × 14/27 × 14 = 294/378
  4. Add the two like fractions:
    72/378 + 294/378 = 72 + 294/378 = 366/378
  5. 366/378 simplified gives 61/63
  6. So, 8/42 + 21/27 = 61/63

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