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Add 20/3 and 21/90

1st number: 6 2/3, 2nd number: 21/90

20/3 + 21/90 is 69/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 90 is 90
  2. For the 1st fraction, since 3 × 30 = 90,
    20/3 = 20 × 30/3 × 30 = 600/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    21/90 = 21 × 1/90 × 1 = 21/90
  4. Add the two fractions:
    600/90 + 21/90 = 600 + 21/90 = 621/90
  5. After reducing the fraction, the answer is 69/10
  6. In mixed form: 69/10

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