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Add 3/5 and 21/90

3/5 + 21/90 is 5/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 90 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 5 × 18 = 90,
    3/5 = 3 × 18/5 × 18 = 54/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    21/90 = 21 × 1/90 × 1 = 21/90
  4. Add the two like fractions:
    54/90 + 21/90 = 54 + 21/90 = 75/90
  5. 75/90 simplified gives 5/6
  6. So, 3/5 + 21/90 = 5/6

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