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Add 6/42 and 42/90

6/42 + 42/90 is 64/105.

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,
    6/42 = 6 × 15/42 × 15 = 90/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    42/90 = 42 × 7/90 × 7 = 294/630
  4. Add the two fractions:
    90/630 + 294/630 = 90 + 294/630 = 384/630
  5. 384/630 simplified gives 64/105
  6. So, 6/42 + 42/90 = 64/105

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