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Add 1/4 and 21/90

1/4 + 21/90 is 29/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 90 is 180
  2. For the 1st fraction, since 4 × 45 = 180,
    1/4 = 1 × 45/4 × 45 = 45/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    21/90 = 21 × 2/90 × 2 = 42/180
  4. Add the two fractions:
    45/180 + 42/180 = 45 + 42/180 = 87/180
  5. After reducing the fraction, the answer is 29/60

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