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Add 4/42 and 3/90

4/42 + 3/90 is 9/70.

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,
    4/42 = 4 × 15/42 × 15 = 60/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    3/90 = 3 × 7/90 × 7 = 21/630
  4. Add the two fractions:
    60/630 + 21/630 = 60 + 21/630 = 81/630
  5. 81/630 simplified gives 9/70
  6. So, 4/42 + 3/90 = 9/70

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