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Add 21/49 and 7/90

21/49 + 7/90 is 319/630.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 90 is 4410

    Next, find the equivalent fraction of both fractional numbers with denominator 4410
  2. For the 1st fraction, since 49 × 90 = 4410,
    21/49 = 21 × 90/49 × 90 = 1890/4410
  3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
    7/90 = 7 × 49/90 × 49 = 343/4410
  4. Add the two like fractions:
    1890/4410 + 343/4410 = 1890 + 343/4410 = 2233/4410
  5. 2233/4410 simplified gives 319/630
  6. So, 21/49 + 7/90 = 319/630

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