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Add 90/54 and 8/21

1st number: 1 36/54, 2nd number: 8/21

90/54 + 8/21 is 43/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 21 is 378
  2. For the 1st fraction, since 54 × 7 = 378,
    90/54 = 90 × 7/54 × 7 = 630/378
  3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
    8/21 = 8 × 18/21 × 18 = 144/378
  4. Add the two fractions:
    630/378 + 144/378 = 630 + 144/378 = 774/378
  5. After reducing the fraction, the answer is 43/21
  6. In mixed form: 21/21

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