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Add 10/42 and 10/90

10/42 + 10/90 is 22/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630
  2. For the 1st fraction, since 42 × 15 = 630,
    10/42 = 10 × 15/42 × 15 = 150/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    10/90 = 10 × 7/90 × 7 = 70/630
  4. Add the two fractions:
    150/630 + 70/630 = 150 + 70/630 = 220/630
  5. After reducing the fraction, the answer is 22/63

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