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Add 3/98 and 72/90

3/98 + 72/90 is 407/490.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 90 is 4410

    Next, find the equivalent fraction of both fractional numbers with denominator 4410
  2. For the 1st fraction, since 98 × 45 = 4410,
    3/98 = 3 × 45/98 × 45 = 135/4410
  3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
    72/90 = 72 × 49/90 × 49 = 3528/4410
  4. Add the two like fractions:
    135/4410 + 3528/4410 = 135 + 3528/4410 = 3663/4410
  5. 3663/4410 simplified gives 407/490
  6. So, 3/98 + 72/90 = 407/490

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