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Add 12/42 and 10/45

12/42 + 10/45 is 32/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 45 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    12/42 = 12 × 15/42 × 15 = 180/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    10/45 = 10 × 14/45 × 14 = 140/630
  4. Add the two fractions:
    180/630 + 140/630 = 180 + 140/630 = 320/630
  5. 320/630 simplified gives 32/63
  6. So, 12/42 + 10/45 = 32/63

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