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Add 14/21 and 12/90

14/21 + 12/90 is 4/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 21 × 30 = 630,
    14/21 = 14 × 30/21 × 30 = 420/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    12/90 = 12 × 7/90 × 7 = 84/630
  4. Add the two like fractions:
    420/630 + 84/630 = 420 + 84/630 = 504/630
  5. 504/630 simplified gives 4/5
  6. So, 14/21 + 12/90 = 4/5

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