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Add 90/20 and 10/84

1st number: 4 10/20, 2nd number: 10/84

90/20 + 10/84 is 97/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    90/20 = 90 × 21/20 × 21 = 1890/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    10/84 = 10 × 5/84 × 5 = 50/420
  4. Add the two like fractions:
    1890/420 + 50/420 = 1890 + 50/420 = 1940/420
  5. 1940/420 simplified gives 97/21
  6. So, 90/20 + 10/84 = 97/21
    In mixed form: 413/21

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