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Add 36/20 and 90/21

1st number: 1 16/20, 2nd number: 4 6/21

36/20 + 90/21 is 213/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 21 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    36/20 = 36 × 21/20 × 21 = 756/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    90/21 = 90 × 20/21 × 20 = 1800/420
  4. Add the two like fractions:
    756/420 + 1800/420 = 756 + 1800/420 = 2556/420
  5. 2556/420 simplified gives 213/35
  6. So, 36/20 + 90/21 = 213/35
    In mixed form: 63/35

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