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Add 90/21 and 20/24

1st number: 4 6/21, 2nd number: 20/24

90/21 + 20/24 is 215/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 24 is 168
  2. For the 1st fraction, since 21 × 8 = 168,
    90/21 = 90 × 8/21 × 8 = 720/168
  3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
    20/24 = 20 × 7/24 × 7 = 140/168
  4. Add the two fractions:
    720/168 + 140/168 = 720 + 140/168 = 860/168
  5. After reducing the fraction, the answer is 215/42
  6. In mixed form: 55/42

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