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Add 90/21 and 30/8

1st number: 4 6/21, 2nd number: 3 6/8

90/21 + 30/8 is 225/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 8 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 8 × 21 = 168,
    30/8 = 30 × 21/8 × 21 = 630/168
  4. Add the two fractions:
    720/168 + 630/168 = 720 + 630/168 = 1350/168
  5. After reducing the fraction, the answer is 225/28
  6. In mixed form: 81/28

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