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Add 1/42 and 90/20

1st number: 1/42, 2nd number: 4 10/20

1/42 + 90/20 is 95/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 42 × 10 = 420,
    1/42 = 1 × 10/42 × 10 = 10/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    90/20 = 90 × 21/20 × 21 = 1890/420
  4. Add the two like fractions:
    10/420 + 1890/420 = 10 + 1890/420 = 1900/420
  5. 1900/420 simplified gives 95/21
  6. So, 1/42 + 90/20 = 95/21
    In mixed form: 411/21

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