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Add 12/30 and 42/63

12/30 + 42/63 is 16/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 63 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 30 × 21 = 630,
    12/30 = 12 × 21/30 × 21 = 252/630
  3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
    42/63 = 42 × 10/63 × 10 = 420/630
  4. Add the two like fractions:
    252/630 + 420/630 = 252 + 420/630 = 672/630
  5. 672/630 simplified gives 16/15
  6. So, 12/30 + 42/63 = 16/15
    In mixed form: 11/15

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