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Add 1/98 and 72/90

1/98 + 72/90 is 397/490.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 90 is 4410
  2. For the 1st fraction, since 98 × 45 = 4410,
    1/98 = 1 × 45/98 × 45 = 45/4410
  3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
    72/90 = 72 × 49/90 × 49 = 3528/4410
  4. Add the two fractions:
    45/4410 + 3528/4410 = 45 + 3528/4410 = 3573/4410
  5. After reducing the fraction, the answer is 397/490

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