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Add 8/42 and 15/45

8/42 + 15/45 is 11/21.

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,
    8/42 = 8 × 15/42 × 15 = 120/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    15/45 = 15 × 14/45 × 14 = 210/630
  4. Add the two fractions:
    120/630 + 210/630 = 120 + 210/630 = 330/630
  5. 330/630 simplified gives 11/21
  6. So, 8/42 + 15/45 = 11/21

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