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Add 36/21 and 90/8

1st number: 1 15/21, 2nd number: 11 2/8

36/21 + 90/8 is 363/28.

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,
    36/21 = 36 × 8/21 × 8 = 288/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    90/8 = 90 × 21/8 × 21 = 1890/168
  4. Add the two fractions:
    288/168 + 1890/168 = 288 + 1890/168 = 2178/168
  5. 2178/168 simplified gives 363/28
  6. So, 36/21 + 90/8 = 363/28
    In mixed form: 1227/28

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