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Add 98/21 and 9/4

1st number: 4 14/21, 2nd number: 2 1/4

98/21 + 9/4 is 83/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 4 is 84
  2. For the 1st fraction, since 21 × 4 = 84,
    98/21 = 98 × 4/21 × 4 = 392/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    9/4 = 9 × 21/4 × 21 = 189/84
  4. Add the two fractions:
    392/84 + 189/84 = 392 + 189/84 = 581/84
  5. 581/84 simplified gives 83/12
  6. So, 98/21 + 9/4 = 83/12
    In mixed form: 611/12

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