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Add 54/21 and 90/8

1st number: 2 12/21, 2nd number: 11 2/8

54/21 + 90/8 is 387/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 21 × 8 = 168,
    54/21 = 54 × 8/21 × 8 = 432/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    90/8 = 90 × 21/8 × 21 = 1890/168
  4. Add the two like fractions:
    432/168 + 1890/168 = 432 + 1890/168 = 2322/168
  5. 2322/168 simplified gives 387/28
  6. So, 54/21 + 90/8 = 387/28
    In mixed form: 1323/28

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