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Add 1/6 and 21/90

1/6 + 21/90 is 2/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 90 is 90
  2. For the 1st fraction, since 6 × 15 = 90,
    1/6 = 1 × 15/6 × 15 = 15/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    21/90 = 21 × 1/90 × 1 = 21/90
  4. Add the two fractions:
    15/90 + 21/90 = 15 + 21/90 = 36/90
  5. After reducing the fraction, the answer is 2/5

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