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Add 27/90 and 10/42

27/90 + 10/42 is 113/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 42 is 630
  2. For the 1st fraction, since 90 × 7 = 630,
    27/90 = 27 × 7/90 × 7 = 189/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    10/42 = 10 × 15/42 × 15 = 150/630
  4. Add the two fractions:
    189/630 + 150/630 = 189 + 150/630 = 339/630
  5. After reducing the fraction, the answer is 113/210

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